WEBVTT - Far Below: The London Underground Mosquito

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<v Speaker 1>Welcome to Stuff to Blow your Mind from how Stuff

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<v Speaker 1>Works dot com. Hey you welcome to Stuff to Blow

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<v Speaker 1>your Mind. My name is Robert Land. I'm Joe McCormick.

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<v Speaker 1>You know Joe. I've I've long held a fascination with

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<v Speaker 1>underground transit system. Yeah, I like him too, Yeah, I

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<v Speaker 1>mean there are a totally unique space they are, and

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<v Speaker 1>it's you know, and it's one of those things that

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<v Speaker 1>I grew up in a more of a rural environment

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<v Speaker 1>and later in my life moved into urban environments where

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<v Speaker 1>I actually have and have had access to these various

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<v Speaker 1>underground train systems and have traveled to places, you know,

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<v Speaker 1>such as such as New York and London where they

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<v Speaker 1>have the most famous examples of the underground transit system.

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<v Speaker 1>But no matter where I am in that timeline, they're

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<v Speaker 1>always just as fascinating to me, whether there's something that

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<v Speaker 1>I only see in a horror movie or something that

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<v Speaker 1>is a part of my day to day life just

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<v Speaker 1>getting to and on work. They are such a unique

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<v Speaker 1>environment and such a cool thing. I'm the same way.

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<v Speaker 1>I'm kind of fascinated with them when I so, I

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<v Speaker 1>made it this far in my life without ever going

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<v Speaker 1>to New York until this past year. I went to

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<v Speaker 1>New York for the first time, and when I came back,

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<v Speaker 1>like the main thing I wanted to talk to everybody

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<v Speaker 1>about was the subway. I know. I was like, it's amazing.

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<v Speaker 1>There's stations everywhere you you know, just just around the corner,

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<v Speaker 1>you can go right in get to wherever you're going.

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<v Speaker 1>It's it's like, this is how a city should work. Yeah,

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<v Speaker 1>And it's also one of those cases where you grow

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<v Speaker 1>up watching all these movies. It's such as such a

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<v Speaker 1>location a fitting location for not only you know, horror

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<v Speaker 1>and monsters and mutants and chuds, but but also just

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<v Speaker 1>intrigued like interesting characters going places, and they do so

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<v Speaker 1>by traversing the underworld. Who's that woman in the overcoat

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<v Speaker 1>with the collar up at the other end of the station?

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<v Speaker 1>Did she just look at me? What's going on? Am

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<v Speaker 1>I being followed? But yeah, I like that you mentioned

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<v Speaker 1>the chud's because that is another aspect of what's great

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<v Speaker 1>about subway systems generally any underground transportation. Are there other

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<v Speaker 1>underground ground I said that, as if there's like underground

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<v Speaker 1>buses or canals. I'm not sure if there are, but yeah,

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<v Speaker 1>so the the underground trains, the tunnels, the tube, all

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<v Speaker 1>this stuff. When you go down into these spaces, it

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<v Speaker 1>is that you're literally entering a sub world where there

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<v Speaker 1>is a whole infrastructure. There's like a city under the city,

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<v Speaker 1>and in many of the big stations, there are things

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<v Speaker 1>in the stations underneath the city. Right, it's not just

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<v Speaker 1>like the train comes by, but there's like little shops

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<v Speaker 1>and encounters and stuff like that. Um, and it's uh,

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<v Speaker 1>it's this whole other world that's divorced from the sun.

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<v Speaker 1>It's separated by this solid barrier, and it's this alien

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<v Speaker 1>environment where it seems like unnatural things could happen. Yeah,

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<v Speaker 1>it's a true underworld. And we mis cycles around the

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<v Speaker 1>world for for ages have have had tails of underworlds

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<v Speaker 1>and uh and people that live underground, races that live underground,

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<v Speaker 1>and it wasn't until relatively modern times that we made

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<v Speaker 1>that truly possible. And they still have the mythic allure

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<v Speaker 1>that they had, you know, back when they were just

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<v Speaker 1>a dream. So is that what we're gonna be talking

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<v Speaker 1>about today morelocks? Well in a sense because uh, because

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<v Speaker 1>we are going to be taught, because we are going

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<v Speaker 1>to bring this back around to science. We are going

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<v Speaker 1>to talk about the the about the question what if

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<v Speaker 1>a species becomes trapped in the underworld, what happens over time?

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<v Speaker 1>Can it become a different species altogether? Can it become

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<v Speaker 1>a subspecies? And we have one very interesting example of

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<v Speaker 1>that current. All right, Well, one of the ways we

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<v Speaker 1>know you can create a new species or a new

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<v Speaker 1>subspecies is to significantly alter the environment in which you live,

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<v Speaker 1>right And so this is, I guess, is why we're

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<v Speaker 1>emphasizing this this alien world quality to the you know

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<v Speaker 1>there are a natural underground systems. Yeah, indeed, and it's

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<v Speaker 1>it's something that again we continue to read into it.

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<v Speaker 1>We create these worlds and then when we stand back,

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<v Speaker 1>when we say, wow, these are this is really strange

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<v Speaker 1>what we've done here with this completely artificial environment underground.

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<v Speaker 1>And countless writers and dreamers filmmakers have have taken that

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<v Speaker 1>and explored that territory. Two examples that come to mind

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<v Speaker 1>or Robert Barbara Johnson's a short story Far Below, which

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<v Speaker 1>is about ghouls in the tunnels beneath us, beneath New

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<v Speaker 1>York City. But when is that written? That was like

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<v Speaker 1>a weird tale, like a classic weird tales story. I

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<v Speaker 1>can't remember the publication date off hand, but it's like,

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<v Speaker 1>you know, classic twentieth century marriagery weird fiction. Yeah. Cool.

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<v Speaker 1>So that's a great one if anyone wants to check

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<v Speaker 1>that out. And then if anyone out there, and I'm

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<v Speaker 1>sure a lot of you are fans of Neil Gaiman's work, um,

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<v Speaker 1>he has explored this as well, the idea that the

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<v Speaker 1>the London Underground specifically is a gateway to a mystical

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<v Speaker 1>fairy world. Yeah, why wouldn't it be? Yeah, And uh,

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<v Speaker 1>you know a lot of this spills over into reality

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<v Speaker 1>too and interesting ways. Uh you know. The author of

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<v Speaker 1>Peter Ackroyd has is a wonderful book about London titled

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<v Speaker 1>London a Biography, and he points out several different, just

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<v Speaker 1>really weird, fascinating facts about the London Underground. Um. This

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<v Speaker 1>is one of my favorite quotes that I always think

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<v Speaker 1>about when I think about the Tube. He says, it

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<v Speaker 1>is a strange city beneath the ground, perhaps best exemplified

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<v Speaker 1>by worn man hole covers which, instead of reading self locking,

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<v Speaker 1>spell out elf king, which is great. I just I

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<v Speaker 1>can't shake that image of like looking down here's this

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<v Speaker 1>man made portal into the underworld, and it says elf

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<v Speaker 1>king like it literally, you know, names the it spells

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<v Speaker 1>out the dominion of of this ancient fairy lord that's

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<v Speaker 1>surely ruling over everything down below. I thought of just

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<v Speaker 1>one more reason why subway tunnels are so intriguing. It's

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<v Speaker 1>because you travel through them, but you don't get to

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<v Speaker 1>explore them. You can't go on foot. Yeah, all you

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<v Speaker 1>can do is look out. That's one of the things

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<v Speaker 1>I love about traveling by underground train is you look

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<v Speaker 1>out and inevitably there's like a forking tunnel, or there's

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<v Speaker 1>some sort of strange door or work area, or wait,

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<v Speaker 1>what's that? Yeah, what is that? Uh, that's that space

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<v Speaker 1>off to the left here. And then you read about

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<v Speaker 1>things such as ghost stations, of which there are several

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<v Speaker 1>in in London, there are a few in New York.

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<v Speaker 1>And what is that? It's a station that just isn't

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<v Speaker 1>used anymore, just an empty station. Uh. And these occur

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<v Speaker 1>with any train system also above the ground. But just

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<v Speaker 1>the idea of going through this old place occupied now

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<v Speaker 1>only by ghosts and maybe fading posters. It's just it's

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<v Speaker 1>just so rich. Or maybe some insect more locks, that's true.

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<v Speaker 1>That's true. We'll get to that now. One film in

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<v Speaker 1>particular that comes to mind on this topic is a

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<v Speaker 1>nineteen seventy two film by the name of Death Line,

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<v Speaker 1>and in the US it came out under the title

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<v Speaker 1>Raw Meat. And it's it's an interesting film. It's a

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<v Speaker 1>it's about a family of cannibals descended from Victorian railway

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<v Speaker 1>workers who wind up buried alive in the tunnels beneath London.

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<v Speaker 1>And uh. And I know that sounds incredible, but believe

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<v Speaker 1>it or not, the best part of the film, or

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<v Speaker 1>at least as far as I'm concerned, is that Donald

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<v Speaker 1>Pleasants is in it. And he plays instead of playing

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<v Speaker 1>like a stuffy academic or some sort of nefarious egghead

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<v Speaker 1>as he was wont to do. Uh, he plays a

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<v Speaker 1>blue collar police inspector named Inspector Calhoun. I don't believe you.

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<v Speaker 1>You know, you've got to check it out, he pleasant says.

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<v Speaker 1>Blue collar. Like he goes and gets a pint of

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<v Speaker 1>beer at the pub. There's like is I recall there's

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<v Speaker 1>an extended sequence in which he and his friend go

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<v Speaker 1>and get a get a beer at at the pub,

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<v Speaker 1>and it seems to go on for a very long time,

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<v Speaker 1>and I don't remember how it connects really to the

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<v Speaker 1>plot of the film, but at the time it felt

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<v Speaker 1>it felt as if the director was saying, Hey, this,

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<v Speaker 1>this guy is more interesting than all this cannibal stuff.

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<v Speaker 1>Let's just follow him for a while and then we'll

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<v Speaker 1>come back to the to the to the weird cannibal dude.

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<v Speaker 1>But with that voice back keep and now that pint

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<v Speaker 1>of ale. How that he didn't he didn't talk like.

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<v Speaker 1>That's one of the wonderful things about this. It's this, uh,

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<v Speaker 1>this more lively pleasants, more lively than than pretty much

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<v Speaker 1>any anything else I've seen him in. Okay, but he's

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<v Speaker 1>not an underground cannibal. No, he's just the police inspector.

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<v Speaker 1>All right, So where did the underground cannibals come in? Well,

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<v Speaker 1>it's the Victorian workers, the guys, the people who got

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<v Speaker 1>trapped underground. They have turned into a different subspecies of

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<v Speaker 1>human down there, and essentially they look like caveman, so

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<v Speaker 1>they haven't gotten full the descent here and turned into

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<v Speaker 1>more ghoulish characters. But there's basically one of these guys left.

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<v Speaker 1>He's the shaggy caveman of a dude, and he just

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<v Speaker 1>goes about um kind of oozing from sores and growling

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<v Speaker 1>and screaming and then attacking people and eating people. So

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<v Speaker 1>if this is from Victorian times, obviously this would not

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<v Speaker 1>be an enough time or enough generations to produce a

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<v Speaker 1>true human subspecies adapted to underground tunnels to produce cannibalistic morlocks.

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<v Speaker 1>Since Victorian times to the nineteen seventies, what would you

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<v Speaker 1>have had a few generations? Yeah, And into the movie's credit, Yeah,

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<v Speaker 1>they don't look like alien monsters. They look like shaggy humans,

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<v Speaker 1>or the one that we see looks like a shaggy human.

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<v Speaker 1>And uh, yeah, he goes about causing all this chaos.

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<v Speaker 1>And it's a fair warning. It's a disturbingly violent film

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<v Speaker 1>at times. It's a bit icky to watch. So you're

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<v Speaker 1>not necessarily saying go out and watch it. Not necessarily,

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<v Speaker 1>I mean, go go watch the trailer and if you

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<v Speaker 1>can see a scene with pleasants in it, and if

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<v Speaker 1>you know dark, violent, seventies hard is your thing, then

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<v Speaker 1>do check it out. But but I bring it up

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<v Speaker 1>because this ties directly into the real world science we're

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<v Speaker 1>talking about today. The question you have a creature is

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<v Speaker 1>locked away buried in the tubes beneath London, and it

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<v Speaker 1>has time to undergo generation after generation of of change

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<v Speaker 1>and adaptation. Can it become a different species? Can it

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<v Speaker 1>become a subspecies? What happens when the dark underworld gets

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<v Speaker 1>to do its work on natural world creatures? All right,

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<v Speaker 1>well we should take a quick break and when we

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<v Speaker 1>come back we will discuss the London Underground Mosquito. Okay,

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<v Speaker 1>we're back. So the London Underground Mosquito is going to

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<v Speaker 1>be what we're talking about today. You can probably guess

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<v Speaker 1>from the name that it lives in the London underground.

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<v Speaker 1>So what's the deal with the London underground Robert? Yeah,

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<v Speaker 1>I suppose we should just back up a few steps

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<v Speaker 1>and just talk about the tube itself, the environment and

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<v Speaker 1>which it dwells. Indeed, this is uh, this was the

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<v Speaker 1>world's first underground railway, opening in eighteen sixty three. Man,

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<v Speaker 1>that's early. Yeah, I would not have believed that it's

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<v Speaker 1>a It's grown and expanded significantly ever since then. And

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<v Speaker 1>so today you've got to eleven lines collected and they

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<v Speaker 1>collectively handle about four point eight million passengers a day

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<v Speaker 1>through two hundred seventy stations and two hundred and fifty

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<v Speaker 1>miles or four dred kilometers of track. Now, despite the name,

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<v Speaker 1>it's worth keeping in mind that only fort of that

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<v Speaker 1>is actually underground. There's plenty, plenty of plenty of track

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<v Speaker 1>that goes above ground. But still that's a lot of

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<v Speaker 1>underground track. Okay, So the London underground mosquito, that's the

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<v Speaker 1>London underground part mosquito part. Okay, Yeah, let's talk about

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<v Speaker 1>mosquitoes for a second. So what are they? Are they?

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<v Speaker 1>That's some kind of elephant I can't remember. Well, it's

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<v Speaker 1>interesting because the mosquito. We all know what the mosquito is.

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<v Speaker 1>We all have a very close relationship with it. It is,

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<v Speaker 1>or at least we have a very close relationship with

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<v Speaker 1>a few types of mosquito. And that's key because the

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<v Speaker 1>world is currently home to some thirty five hundred named

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<v Speaker 1>species of mosquitoes, and of those thirty five hundred, only

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<v Speaker 1>two hundred or so actually bother humans. But you know,

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<v Speaker 1>we're kind of irresistible, right, like the mosquito. We thrive

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<v Speaker 1>with these throughout most of the world, and we offer

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<v Speaker 1>large expanses of relatively hairless skin, all of it coursing

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<v Speaker 1>with delicious blood. Oh man, you don't usually think about

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<v Speaker 1>hair as being such a protective mechanism against parasitism like that.

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<v Speaker 1>But yeah, I mean, like, if you're a mosquito and

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<v Speaker 1>you come up against something really hairy, that's almost like

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<v Speaker 1>trying to get through barbed wire. And we're we're large

0:12:25.600 --> 0:12:28.920
<v Speaker 1>organisms compared to you know, most organisms. We're we're large,

0:12:28.960 --> 0:12:32.320
<v Speaker 1>relatively hairless, and we're everywhere, and so the mosquitoes everywhere.

0:12:33.000 --> 0:12:36.200
<v Speaker 1>Now the most common genera here are going to be

0:12:36.480 --> 0:12:42.360
<v Speaker 1>the awful ease Kulicks and the eighties mosquitoes. Now, mosquitoes

0:12:42.360 --> 0:12:45.400
<v Speaker 1>obviously are accomplished flyers, and anyone who's ever tried to

0:12:45.480 --> 0:12:48.800
<v Speaker 1>kill a mosquito can testify this. I had a as

0:12:49.040 --> 0:12:52.319
<v Speaker 1>a tangent here when I was recently um in Barbados.

0:12:52.880 --> 0:12:58.040
<v Speaker 1>I we largely didn't encounter mosquitoes at all, but we had,

0:12:58.200 --> 0:13:00.200
<v Speaker 1>you know, the Zico virus in our minds that we

0:13:00.200 --> 0:13:02.600
<v Speaker 1>were always on the lookout. And I was trapped in

0:13:02.640 --> 0:13:05.719
<v Speaker 1>the room by myself at one point with one mosquito

0:13:06.200 --> 0:13:08.240
<v Speaker 1>and it seems like it took forever for me to

0:13:08.240 --> 0:13:09.880
<v Speaker 1>to kill it. I finally had to do that trick

0:13:09.920 --> 0:13:11.760
<v Speaker 1>where you're like, all right, I'm gonna let you land

0:13:11.800 --> 0:13:14.559
<v Speaker 1>on me. I'm gonna let I'm gonna I'm gonna let

0:13:14.559 --> 0:13:17.800
<v Speaker 1>you feed or almost feed on me, and and I'll

0:13:17.800 --> 0:13:20.600
<v Speaker 1>do it to protect my family from from me. I'll

0:13:20.640 --> 0:13:23.000
<v Speaker 1>offer myself up as a sacrifice and then I will

0:13:23.080 --> 0:13:25.280
<v Speaker 1>kill you. But that's that's often the only way you

0:13:25.320 --> 0:13:30.440
<v Speaker 1>can get them. They're so surprisingly h skilled at at

0:13:30.440 --> 0:13:33.959
<v Speaker 1>getting out of the way of our our slaps and snacks. Well,

0:13:34.000 --> 0:13:37.480
<v Speaker 1>thanks for exposing me to Zeke and now Robert, that's

0:13:37.480 --> 0:13:40.040
<v Speaker 1>all right. I was not infected, so maybe I killed it.

0:13:41.360 --> 0:13:44.520
<v Speaker 1>It was one of you know, it was not infected itself. Well,

0:13:44.640 --> 0:13:48.560
<v Speaker 1>you know, you do hear about how these mosquito species

0:13:48.600 --> 0:13:51.480
<v Speaker 1>can traverse these long distances that you wouldn't expect In

0:13:51.559 --> 0:13:53.199
<v Speaker 1>one of the things we were reading today, it was

0:13:53.240 --> 0:13:56.560
<v Speaker 1>an exerpt from a book by a biologist named David Resnick,

0:13:56.559 --> 0:13:59.560
<v Speaker 1>who will get into more detail about later, but he

0:13:59.640 --> 0:14:01.480
<v Speaker 1>mentioned is the fact that you know, it used to

0:14:01.480 --> 0:14:04.600
<v Speaker 1>be that Hawaii didn't have mosquitoes that would bite humans.

0:14:04.920 --> 0:14:08.400
<v Speaker 1>Oh yeah, they got imported, not on purpose, I think,

0:14:09.000 --> 0:14:10.880
<v Speaker 1>wouldn't that be a great thing. No, No, But they're

0:14:10.960 --> 0:14:13.920
<v Speaker 1>like a lot of species. They they have a tremendous

0:14:13.920 --> 0:14:18.240
<v Speaker 1>ability to hitch rides on human transports, so they've managed

0:14:18.280 --> 0:14:22.480
<v Speaker 1>to invade whole new continents, uh, such as the invasive

0:14:22.560 --> 0:14:25.800
<v Speaker 1>yellow fever carrying eighties at jip Di that you find

0:14:25.840 --> 0:14:29.160
<v Speaker 1>in South America, which has been quite a problem. Um.

0:14:29.240 --> 0:14:31.440
<v Speaker 1>They also the cool thing to keep in mind about

0:14:31.400 --> 0:14:34.960
<v Speaker 1>mosquitoes is they benefit from an incredibly fast reproductive cycle. Now,

0:14:35.080 --> 0:14:37.640
<v Speaker 1>this is going to be important once we start talking

0:14:37.680 --> 0:14:41.120
<v Speaker 1>about the rates of evolution. That's right, Yeah, just how

0:14:41.560 --> 0:14:45.640
<v Speaker 1>because for the rate of evolution to to really be visible,

0:14:45.760 --> 0:14:48.480
<v Speaker 1>you have to have short periods, you have short lifespans

0:14:48.520 --> 0:14:52.280
<v Speaker 1>and fast reproduction cycle. And uh yeah, indeed that's the

0:14:52.320 --> 0:14:54.160
<v Speaker 1>case here. All they need is the tiniest bit of

0:14:54.200 --> 0:14:57.640
<v Speaker 1>standing water, uh, you know, abandoned swimming pools, bird baths

0:14:57.680 --> 0:14:59.800
<v Speaker 1>are great, but they'll also do just fine with a

0:15:00.000 --> 0:15:02.960
<v Speaker 1>at bowl, even a candy wrapper, a small puddle, or

0:15:03.000 --> 0:15:05.680
<v Speaker 1>even just a damp spot in the earth. They go

0:15:05.760 --> 0:15:10.320
<v Speaker 1>through four stages, adults, water, surface eggs, subsurface larvae. They

0:15:10.360 --> 0:15:13.480
<v Speaker 1>breathe through a kind of snorkele that pokes up through

0:15:13.480 --> 0:15:16.280
<v Speaker 1>the surface of the water, and a pupa stage. Now

0:15:16.320 --> 0:15:20.400
<v Speaker 1>they've been around roughly one million years. Isn't that great

0:15:20.440 --> 0:15:22.960
<v Speaker 1>to think about? Well, actually, it's not all that unusual

0:15:23.080 --> 0:15:25.720
<v Speaker 1>because we've all seen Jurassic Park. But had we not,

0:15:26.480 --> 0:15:29.680
<v Speaker 1>wouldn't it be fascinating to think about these little insects

0:15:29.680 --> 0:15:32.800
<v Speaker 1>biting dinosaurs? Yeah? You had just to think that this

0:15:32.800 --> 0:15:35.520
<v Speaker 1>this is something that uh, they've been so good at

0:15:35.560 --> 0:15:39.600
<v Speaker 1>for so long, and they're gonna they're not going away. Uh.

0:15:39.720 --> 0:15:42.920
<v Speaker 1>The oldest evidence we have for blood feeding mosquitoes comes

0:15:42.960 --> 0:15:46.400
<v Speaker 1>from a fossil that's known as proto mosquito, and this

0:15:46.480 --> 0:15:49.880
<v Speaker 1>is from the Triassic period about two million years ago,

0:15:50.560 --> 0:15:53.760
<v Speaker 1>so there were no flowering plants. So the elongated probiscus

0:15:53.880 --> 0:15:56.920
<v Speaker 1>is thought to have functioned like modern mosquitoes, you know,

0:15:57.160 --> 0:15:59.320
<v Speaker 1>for the drinking of blood. Oh you mean, so it's

0:15:59.360 --> 0:16:02.160
<v Speaker 1>like sin. There weren't plants, It didn't it couldn't be

0:16:02.160 --> 0:16:05.840
<v Speaker 1>like a hummingbird sticking its nose into something. If it's

0:16:05.840 --> 0:16:08.560
<v Speaker 1>sticking its nose into something, it was probably something that

0:16:08.560 --> 0:16:11.040
<v Speaker 1>had blood in it, right, that's the that's the theory.

0:16:11.560 --> 0:16:14.400
<v Speaker 1>Now you'll find mosquitoes now and every continent except Antarctica.

0:16:14.520 --> 0:16:17.560
<v Speaker 1>They thrive, and even our most exhaustive steps to eradicate

0:16:17.600 --> 0:16:20.560
<v Speaker 1>them often only work in the short term because again

0:16:20.600 --> 0:16:24.040
<v Speaker 1>they they're just so adapted, moving into new environments taking

0:16:24.040 --> 0:16:27.600
<v Speaker 1>advantage of the smallest quantities of water. Okay, so we've

0:16:27.600 --> 0:16:31.040
<v Speaker 1>got the two things there, the London underground the mosquito.

0:16:31.320 --> 0:16:35.600
<v Speaker 1>Let's let's make these great tastes taste nasty together. Yeah, So,

0:16:35.600 --> 0:16:38.000
<v Speaker 1>first of all, let's talk about the surface mosquito before

0:16:38.000 --> 0:16:41.520
<v Speaker 1>we talk about the you know, subsurface variant. All right,

0:16:41.560 --> 0:16:45.520
<v Speaker 1>So the species we're talking about is Coolex pipians and

0:16:45.560 --> 0:16:48.640
<v Speaker 1>according to biologist David Resnick, who I'll cite more deeply,

0:16:48.800 --> 0:16:51.960
<v Speaker 1>especially towards the end of this episode, uh pippians is

0:16:52.000 --> 0:16:55.200
<v Speaker 1>the single most widespread mosquito in the world. It's all

0:16:55.240 --> 0:16:58.360
<v Speaker 1>over the place. It is a disease vector known to

0:16:58.360 --> 0:17:01.640
<v Speaker 1>spread Westnile virus as well as some forms of encephalitis

0:17:01.640 --> 0:17:05.520
<v Speaker 1>and meningitis. And it mates in these big swarms that

0:17:05.600 --> 0:17:08.560
<v Speaker 1>take place out in open areas, and then it deposits

0:17:08.560 --> 0:17:11.680
<v Speaker 1>its fertilized eggs in the form of a floating raft

0:17:11.760 --> 0:17:15.760
<v Speaker 1>of eggs on still water. Resinic rather elegantly, I think

0:17:15.880 --> 0:17:20.520
<v Speaker 1>lists quote untended bird baths, forgotten buckets in the backyard,

0:17:20.920 --> 0:17:26.640
<v Speaker 1>discarded automobile tires, clogged, rain gutters, or wherever else. Fetid, stagnant,

0:17:26.640 --> 0:17:31.080
<v Speaker 1>water accumulates. I love that. One of my favorite words

0:17:31.160 --> 0:17:35.359
<v Speaker 1>is fetted. That's really good. Now, once these rafts of

0:17:35.520 --> 0:17:38.199
<v Speaker 1>eggs start to hatch, they turn into, as you mentioned

0:17:38.240 --> 0:17:41.359
<v Speaker 1>in the general mosquito life cycle earlier, the water dwelling

0:17:41.440 --> 0:17:45.120
<v Speaker 1>larva stage. And these larva eat these eat small things

0:17:45.119 --> 0:17:47.880
<v Speaker 1>that live in the water, you know, eat microbes for sustenance.

0:17:48.240 --> 0:17:51.520
<v Speaker 1>And then about ten days into the larval stage and

0:17:51.560 --> 0:17:53.880
<v Speaker 1>they come out of the water as adults begin feeding

0:17:54.119 --> 0:17:58.080
<v Speaker 1>and being the breeding process. So the females seek out

0:17:58.080 --> 0:18:02.040
<v Speaker 1>a blood meal, which in wholes pipians almost always comes

0:18:02.080 --> 0:18:05.720
<v Speaker 1>from a bird. Why well, because bird blood is good stuff.

0:18:05.800 --> 0:18:08.200
<v Speaker 1>Don't be a food snob at the cool ex Pippians.

0:18:08.600 --> 0:18:10.760
<v Speaker 1>After you've got a blood meal from a bird, you've

0:18:10.760 --> 0:18:13.600
<v Speaker 1>got enough nutrition to invest in forming some eggs. And

0:18:13.640 --> 0:18:16.920
<v Speaker 1>this is important because it goes blood meal then eggs.

0:18:17.000 --> 0:18:20.200
<v Speaker 1>You need the blood in order to make the eggs. Uh.

0:18:20.240 --> 0:18:22.160
<v Speaker 1>And then once you've got the eggs, you can start

0:18:22.200 --> 0:18:25.480
<v Speaker 1>the whole process over again with a mating swarm or

0:18:25.520 --> 0:18:28.760
<v Speaker 1>what I think should be called a swargy. I like

0:18:28.880 --> 0:18:33.159
<v Speaker 1>that swargy and it is it is worth noting the

0:18:33.200 --> 0:18:36.920
<v Speaker 1>whole male female mosquito thing here, right, because the females

0:18:37.119 --> 0:18:40.399
<v Speaker 1>are the ones that that feed on blood. The males

0:18:40.440 --> 0:18:42.480
<v Speaker 1>do not. And you're one, what are the males that

0:18:42.520 --> 0:18:45.080
<v Speaker 1>if they don't eat blood, well, they depend they feed

0:18:45.119 --> 0:18:50.000
<v Speaker 1>on flowers and plants, many many, A beautiful swamp orchid

0:18:50.400 --> 0:18:54.640
<v Speaker 1>depends on mosquitoes for the pollination, so that the blood

0:18:54.840 --> 0:18:59.200
<v Speaker 1>is directly tied to the reproductive cycle of the female. Right.

0:18:59.280 --> 0:19:02.240
<v Speaker 1>So now in London there appears to be a totally

0:19:02.280 --> 0:19:05.360
<v Speaker 1>normal form of this species found on the surface doing

0:19:05.400 --> 0:19:08.800
<v Speaker 1>all the normal stuff, feeding on birds, getting the blood

0:19:08.840 --> 0:19:13.760
<v Speaker 1>meal before reproducing, and that's standard Koulex pippions pippions, But

0:19:13.920 --> 0:19:18.600
<v Speaker 1>they're also appears to be a subterranean variant of this

0:19:18.720 --> 0:19:23.840
<v Speaker 1>species in the London underground, that's right. And londoners uh

0:19:24.119 --> 0:19:28.359
<v Speaker 1>supposedly first discovered them during the blitz of World War two.

0:19:28.920 --> 0:19:32.400
<v Speaker 1>So German bombers terrorized the night skies and and roughly

0:19:32.480 --> 0:19:35.439
<v Speaker 1>one roughly one hundred and eighty thousand people sheltered in

0:19:35.440 --> 0:19:38.120
<v Speaker 1>the tunnels, just as they had during World War One.

0:19:38.240 --> 0:19:41.600
<v Speaker 1>Can you imagine that It's like you're you're fleeing bombing

0:19:41.680 --> 0:19:44.879
<v Speaker 1>of your city, and the last thing you want is

0:19:44.920 --> 0:19:47.320
<v Speaker 1>to be swarmed with mosquitoes in the dark, I know.

0:19:47.440 --> 0:19:49.359
<v Speaker 1>And that's what happened. They had to contend with not

0:19:49.400 --> 0:19:52.440
<v Speaker 1>only some mosquitoes, but apparently lies and ticks. Uh. And

0:19:52.720 --> 0:19:56.080
<v Speaker 1>everyone knows about rats in the subways and sewers to

0:19:56.119 --> 0:19:59.920
<v Speaker 1>go back to my perhaps h you know, childish and

0:20:00.040 --> 0:20:04.040
<v Speaker 1>enthusiasm for underground transportation. I always get a little excited

0:20:04.040 --> 0:20:06.639
<v Speaker 1>when I see a subway rat, even though I know

0:20:06.760 --> 0:20:09.040
<v Speaker 1>you're not supposed to see one, and it's bad, it's

0:20:09.119 --> 0:20:11.840
<v Speaker 1>you know, it's it's an infectious road and and all that.

0:20:12.000 --> 0:20:14.280
<v Speaker 1>But I still get excited because it's like, it's it's

0:20:14.280 --> 0:20:16.800
<v Speaker 1>like seeing a unicorn. I don't know what. So, I

0:20:17.119 --> 0:20:18.919
<v Speaker 1>don't like to see a rat in my house, but

0:20:19.040 --> 0:20:22.640
<v Speaker 1>when I see a rat scamper across the marta tracks like.

0:20:22.800 --> 0:20:25.400
<v Speaker 1>I love that feeling of seeing it dart out from

0:20:25.440 --> 0:20:27.959
<v Speaker 1>cover and go to somewhere else, I'm like, yeah, go buddy.

0:20:28.280 --> 0:20:30.840
<v Speaker 1>It's like that scene in in the Last Unicorn. You

0:20:30.840 --> 0:20:32.879
<v Speaker 1>remember at the beginning where the the old man and

0:20:32.880 --> 0:20:35.639
<v Speaker 1>the younger hunter glimpse the unicorn in the distance and

0:20:35.680 --> 0:20:38.680
<v Speaker 1>the the old man like takes the man the kid

0:20:38.720 --> 0:20:42.000
<v Speaker 1>aside and says, you've seen something special today. There are

0:20:42.040 --> 0:20:43.840
<v Speaker 1>not many of them left in the world, you know.

0:20:44.119 --> 0:20:48.360
<v Speaker 1>It's that's how I feel about the subway rat. Now.

0:20:48.400 --> 0:20:51.680
<v Speaker 1>So you say, people notice these mosquitoes in the underground

0:20:51.760 --> 0:20:54.240
<v Speaker 1>in World War two? But is that when they were

0:20:54.240 --> 0:20:57.119
<v Speaker 1>first there or were they there before? Then the mosquitoes

0:20:57.119 --> 0:20:59.640
<v Speaker 1>are the people the mosquitoes? Okay, because it is because

0:20:59.680 --> 0:21:01.480
<v Speaker 1>again I I do want to point out that world

0:21:01.480 --> 0:21:04.760
<v Speaker 1>War One you saw similar to the tune of a

0:21:04.800 --> 0:21:07.960
<v Speaker 1>third of a million Londoners going down there. And there's

0:21:07.960 --> 0:21:12.240
<v Speaker 1>a wonderful quote here that I ran across from from

0:21:12.240 --> 0:21:15.240
<v Speaker 1>Ackroyd's book. But he points out that Philip Ziegler in

0:21:15.320 --> 0:21:18.600
<v Speaker 1>the book London at War related that quote. One of

0:21:18.600 --> 0:21:21.720
<v Speaker 1>the principal fears of the authorities is that a deep

0:21:21.840 --> 0:21:25.879
<v Speaker 1>shelter mentality might grow up and result in paralysis of

0:21:25.920 --> 0:21:28.600
<v Speaker 1>the will among those who succumbed to it. It was

0:21:28.640 --> 0:21:32.399
<v Speaker 1>also suggested that the underground Londoners would grow hysterical with

0:21:32.480 --> 0:21:35.159
<v Speaker 1>fear and would never surface to perform their duties. So

0:21:35.200 --> 0:21:38.080
<v Speaker 1>they were actually afraid of something sort of like the

0:21:38.160 --> 0:21:41.760
<v Speaker 1>raw meat scenario, like death line that that people would

0:21:41.760 --> 0:21:45.160
<v Speaker 1>go down there to take shelter and that they would

0:21:45.160 --> 0:21:47.439
<v Speaker 1>just not be able to come back up. Yeah. And

0:21:47.440 --> 0:21:49.760
<v Speaker 1>I think this it's important to note in looking at

0:21:49.760 --> 0:21:52.280
<v Speaker 1>a film like like Death Line. Uh. And it feeds

0:21:52.320 --> 0:21:58.360
<v Speaker 1>into just sort of the the industrial age paranoia of

0:21:57.760 --> 0:22:01.520
<v Speaker 1>of of of the English and and really modern Western life,

0:22:01.560 --> 0:22:04.800
<v Speaker 1>the idea that we're we're changing our world through this

0:22:04.880 --> 0:22:08.880
<v Speaker 1>industrial movement, our cities are becoming these inhuman places, and

0:22:09.280 --> 0:22:12.840
<v Speaker 1>like the underground tunnel and the idea of cowering down

0:22:12.840 --> 0:22:17.000
<v Speaker 1>there and you know, protecting yourselves from from these bombings. Uh,

0:22:17.160 --> 0:22:19.280
<v Speaker 1>it becomes a perfect symbol of that. Well, it is

0:22:19.320 --> 0:22:22.080
<v Speaker 1>something we're thinking about because in a biological sense, our

0:22:22.160 --> 0:22:26.159
<v Speaker 1>environments really do define us. They shape our very biology.

0:22:26.200 --> 0:22:28.680
<v Speaker 1>You know, the way your hands are, the way your

0:22:28.760 --> 0:22:31.240
<v Speaker 1>eyes work, the way your teeth are, and the way

0:22:31.280 --> 0:22:34.480
<v Speaker 1>your brain defines your behavior, that's all shaped by the

0:22:34.600 --> 0:22:38.320
<v Speaker 1>environment your ancestors come from. You know, it's what genetic

0:22:38.560 --> 0:22:41.440
<v Speaker 1>options the environment had to work with and then molding

0:22:41.520 --> 0:22:44.880
<v Speaker 1>that to survive and reproduce best in it. So your

0:22:44.960 --> 0:22:47.760
<v Speaker 1>environment does define you. I think that's not something to

0:22:47.840 --> 0:22:51.520
<v Speaker 1>just be laughed off as paranoia. No, no, Um, and

0:22:51.560 --> 0:22:54.119
<v Speaker 1>you know they're they're also all these wonderful tales, you know,

0:22:54.560 --> 0:22:59.240
<v Speaker 1>many probably folkloric in nature, about people known as firm

0:22:59.320 --> 0:23:02.359
<v Speaker 1>ers or rakes or flushers. These were people who clean

0:23:02.480 --> 0:23:06.600
<v Speaker 1>sewage tunnel blocks, as well as tashers, who are hunters

0:23:06.600 --> 0:23:09.920
<v Speaker 1>of valuables in the sewers and tunnels underneath London. These

0:23:09.920 --> 0:23:14.280
<v Speaker 1>are some great UH British isms, tash ers firmers. So

0:23:14.359 --> 0:23:17.919
<v Speaker 1>their tales of like tashas and firmers uh becoming lost

0:23:18.040 --> 0:23:20.800
<v Speaker 1>in this subworld maze and eventually they either fall dead

0:23:20.840 --> 0:23:23.200
<v Speaker 1>from exhaustion and they grow so weak that a swarm

0:23:23.240 --> 0:23:27.080
<v Speaker 1>of rats just eats them alive. So anyway, the humans

0:23:27.080 --> 0:23:31.320
<v Speaker 1>had been going down unbeneath London for some time. They

0:23:31.400 --> 0:23:35.600
<v Speaker 1>had created this additional mythos and this UH and these

0:23:35.680 --> 0:23:39.480
<v Speaker 1>various expressions of their fear regarding the underworld, and indeed

0:23:39.520 --> 0:23:41.840
<v Speaker 1>the mosquitoes had been down there for some time too.

0:23:42.520 --> 0:23:44.439
<v Speaker 1>Based on the research we're looking at, it seems that

0:23:44.920 --> 0:23:48.040
<v Speaker 1>there it's thought that you had different points when mosquitoes

0:23:48.040 --> 0:23:51.239
<v Speaker 1>were introduced to this underground though world, and then they

0:23:51.280 --> 0:23:54.919
<v Speaker 1>become trapped down there. But since they're that they have

0:23:55.040 --> 0:23:58.240
<v Speaker 1>what they need down there they managed to survive because

0:23:58.240 --> 0:24:01.520
<v Speaker 1>there are rats, there are humans. It's where the humans go.

0:24:02.000 --> 0:24:06.920
<v Speaker 1>You almost have this captive uh ever, changing food supply, right,

0:24:07.119 --> 0:24:11.320
<v Speaker 1>So this does make us wondered, I mean, should we

0:24:11.359 --> 0:24:14.159
<v Speaker 1>should start to think about You've got these mosquitoes that

0:24:14.200 --> 0:24:16.960
<v Speaker 1>live underground, you've got the mosquitoes that live above ground.

0:24:17.000 --> 0:24:19.480
<v Speaker 1>They appear to both be some form of cool expipians.

0:24:20.880 --> 0:24:25.160
<v Speaker 1>But are the ones underground actually a different animal? Now

0:24:25.880 --> 0:24:29.280
<v Speaker 1>that is an excellent question, and after one more quick break,

0:24:29.720 --> 0:24:38.480
<v Speaker 1>we shall explore it. So after the war, no one

0:24:38.560 --> 0:24:41.120
<v Speaker 1>forgot about the tunnels for sure, but yeah, I guess

0:24:41.160 --> 0:24:44.040
<v Speaker 1>there was a lot else to to worry about. Uh,

0:24:44.080 --> 0:24:47.160
<v Speaker 1>people kind of forgot about the mosquitoes down in the tubes.

0:24:47.760 --> 0:24:51.840
<v Speaker 1>You didn't see a lot of attention really surrounding them. Occasionally,

0:24:51.840 --> 0:24:54.399
<v Speaker 1>you know, there would be workers who who would you know,

0:24:54.440 --> 0:24:56.600
<v Speaker 1>want to wind up with mosquito bites, and they reported

0:24:56.640 --> 0:24:58.200
<v Speaker 1>and certainly, you know, people who were going down on

0:24:58.240 --> 0:25:00.720
<v Speaker 1>a regular basis might have noticed them. But for the

0:25:00.760 --> 0:25:05.320
<v Speaker 1>most part, nobody really gave them much attention. And then

0:25:05.880 --> 0:25:09.040
<v Speaker 1>about fifty years after the close of World War Two,

0:25:09.640 --> 0:25:13.479
<v Speaker 1>you had Katherine Burn come around. Now she was a

0:25:13.520 --> 0:25:17.160
<v Speaker 1>doctoral student at the time, and she decided to investigate.

0:25:17.480 --> 0:25:20.959
<v Speaker 1>So she collected mosquitoes from seven different subterranean sites, and

0:25:21.000 --> 0:25:24.600
<v Speaker 1>in all there were something like twenty sites covering outdoor, indoor,

0:25:24.600 --> 0:25:29.560
<v Speaker 1>and subterranean locations around London. And then the researchers reared

0:25:29.600 --> 0:25:33.480
<v Speaker 1>the captured mosquitoes. They attempted cross breeding, cross breeding between

0:25:33.480 --> 0:25:36.399
<v Speaker 1>mosquitoes and mosquitoes, not between mosquitoes and humans, just to

0:25:36.400 --> 0:25:39.720
<v Speaker 1>go and get that out of the way. Um. And

0:25:39.760 --> 0:25:44.040
<v Speaker 1>they they found that the kulicks pippians in the underground

0:25:44.040 --> 0:25:47.280
<v Speaker 1>behaved rather differently from those that lived on the surface.

0:25:47.480 --> 0:25:52.520
<v Speaker 1>So for example, uh, surface uh pippians only drank the

0:25:52.560 --> 0:25:56.119
<v Speaker 1>blood of birds. But this uh, this new subspecies, this

0:25:56.240 --> 0:26:00.760
<v Speaker 1>Skulis Pippians molestus, they call it. This one drank and blunt. Now,

0:26:00.920 --> 0:26:03.720
<v Speaker 1>I gotta make it worse than that, because to to

0:26:03.760 --> 0:26:08.000
<v Speaker 1>really excite your used needles, squick, they feed primarily on

0:26:08.119 --> 0:26:12.160
<v Speaker 1>humans and rats, So because what else you're gonna feed

0:26:12.160 --> 0:26:14.040
<v Speaker 1>on down there? Yeah, So if you're down in the

0:26:14.080 --> 0:26:16.920
<v Speaker 1>tube in London and you feel an itch on your neck,

0:26:17.000 --> 0:26:20.320
<v Speaker 1>it's possible that the last thing that sharp little probosis

0:26:20.359 --> 0:26:24.280
<v Speaker 1>went into before your skin might have been another person,

0:26:24.800 --> 0:26:27.000
<v Speaker 1>or it might have been the belly of one member

0:26:27.119 --> 0:26:31.919
<v Speaker 1>of a huge cockney rat and that was a wonderful image.

0:26:32.040 --> 0:26:33.520
<v Speaker 1>But yeah, that's always one of the concerns with the

0:26:33.560 --> 0:26:35.919
<v Speaker 1>parasitic organism, like who else has it been feeding on?

0:26:36.000 --> 0:26:38.560
<v Speaker 1>And what else has it been feeding on? Right? Uh

0:26:38.600 --> 0:26:41.359
<v Speaker 1>so yeah, so there there was a resulting paper here right,

0:26:41.400 --> 0:26:45.680
<v Speaker 1>published in the journal Heredity in nine It was Burns

0:26:45.720 --> 0:26:50.120
<v Speaker 1>paper with Richard Nickel, and it was called Kool Expipians

0:26:50.119 --> 0:26:56.199
<v Speaker 1>in London Underground Tunnels differentiation between surface and subterranean populations.

0:26:56.600 --> 0:26:58.560
<v Speaker 1>All right, so let's talk about some of these differences

0:26:58.600 --> 0:27:02.320
<v Speaker 1>that we see. So, uh, the core that the core

0:27:02.359 --> 0:27:04.960
<v Speaker 1>differences of course, so we already mentioned that the mosquitoes

0:27:05.000 --> 0:27:08.320
<v Speaker 1>are are consuming primarily the blood of rats and humans

0:27:08.320 --> 0:27:11.440
<v Speaker 1>because that is west down there, mammal blood. Yeah. Now,

0:27:11.560 --> 0:27:13.280
<v Speaker 1>the other things to keep in mind is that this

0:27:13.560 --> 0:27:16.640
<v Speaker 1>the molestus mosquitoes. They don't need as much space anymore

0:27:16.720 --> 0:27:20.080
<v Speaker 1>because they are living in confined tubes, and that is

0:27:20.359 --> 0:27:23.639
<v Speaker 1>that that has an impact on how they reproduce because

0:27:23.640 --> 0:27:26.879
<v Speaker 1>they're not they're then not depending on these big you know,

0:27:27.280 --> 0:27:29.840
<v Speaker 1>what do you what do you call them swargies? These uh,

0:27:29.960 --> 0:27:33.880
<v Speaker 1>big open air, open space swarming mating swarms. Yeah, these

0:27:33.920 --> 0:27:37.480
<v Speaker 1>are these big mating swarms are not occurring in the underworld.

0:27:37.680 --> 0:27:40.080
<v Speaker 1>They are and instead going with you know, a smaller

0:27:40.119 --> 0:27:46.000
<v Speaker 1>scale reproductive breeding then scheduled venue if you will. Yeah.

0:27:46.240 --> 0:27:49.360
<v Speaker 1>And on top of that, they are they are largely

0:27:49.400 --> 0:27:53.879
<v Speaker 1>protected from colder weather, so they forego winter hibernation. And

0:27:53.960 --> 0:27:57.159
<v Speaker 1>interestingly enough, they don't need that blood meal necessarily to

0:27:57.359 --> 0:28:01.359
<v Speaker 1>lay their eggs. Now, this is to say that to

0:28:01.560 --> 0:28:03.600
<v Speaker 1>get tentantical on the blood stuff. This means that they

0:28:03.640 --> 0:28:06.960
<v Speaker 1>are autogeneous. They do not require a blood meal in

0:28:07.040 --> 0:28:09.440
<v Speaker 1>order to lay eggs. Where he mentioned how the male

0:28:09.480 --> 0:28:13.320
<v Speaker 1>and female mosquitoes consume nectar and plant juices, the females

0:28:13.359 --> 0:28:15.680
<v Speaker 1>and the species just need that blood meal to energize

0:28:15.720 --> 0:28:18.600
<v Speaker 1>their egg production right now, part of the reproductive cycle. Right.

0:28:18.640 --> 0:28:21.560
<v Speaker 1>And if you look at mosquitoes around the world, all

0:28:21.600 --> 0:28:25.359
<v Speaker 1>the different species, some do require that blood meal, some don't,

0:28:25.400 --> 0:28:28.320
<v Speaker 1>and some merely benefit from it, which is to say,

0:28:28.640 --> 0:28:31.639
<v Speaker 1>they can produce eggs without the blood meal. But if

0:28:31.680 --> 0:28:33.919
<v Speaker 1>they get the blood meal, they're gonna it's gonna be

0:28:33.960 --> 0:28:37.240
<v Speaker 1>that you know, much stronger of an egg production. So

0:28:37.400 --> 0:28:41.120
<v Speaker 1>in short, it appeared that the mosquitoes adapted to the underworld,

0:28:41.120 --> 0:28:44.160
<v Speaker 1>they became so distinct even that they could no longer

0:28:44.280 --> 0:28:46.960
<v Speaker 1>breed or would no longer breed with their surface dwell

0:28:47.040 --> 0:28:49.640
<v Speaker 1>and kin different and this is because different mating behaviors,

0:28:49.840 --> 0:28:54.880
<v Speaker 1>different reproductive behavior. No mating swarms, just individual lovers finding

0:28:54.920 --> 0:28:58.760
<v Speaker 1>each other in the the subway tunnels. Well, I guess

0:28:58.840 --> 0:29:01.760
<v Speaker 1>this leads us to the question. Obviously we've had since

0:29:01.880 --> 0:29:06.040
<v Speaker 1>the beginning of the London Underground some form of divergent

0:29:06.080 --> 0:29:09.160
<v Speaker 1>evolution going on here. But but does this count as

0:29:09.160 --> 0:29:12.640
<v Speaker 1>a different species? That's sort of the question, especially a

0:29:12.720 --> 0:29:14.640
<v Speaker 1>lay person might want to ask, well, is it really

0:29:14.720 --> 0:29:19.920
<v Speaker 1>a different animal? Now? Uh? Is it a speciation event? Yeah?

0:29:19.960 --> 0:29:22.120
<v Speaker 1>Because I think one of the big questions to consider is,

0:29:22.200 --> 0:29:24.800
<v Speaker 1>you know, to what extent are they biologically and or

0:29:24.960 --> 0:29:29.120
<v Speaker 1>behaviorally unable to breed with the surface world mosquitoes of

0:29:29.120 --> 0:29:31.720
<v Speaker 1>their species? So these would this would be sort of

0:29:31.760 --> 0:29:35.120
<v Speaker 1>the standard definition of a species division right now. Of course,

0:29:35.240 --> 0:29:37.920
<v Speaker 1>that this is bearing in mind that distinct but closely

0:29:37.960 --> 0:29:43.040
<v Speaker 1>related species can sometimes technically breed to produce hybrid offspring,

0:29:43.120 --> 0:29:47.160
<v Speaker 1>though sometimes they're infertile or otherwise compromised. Right, So I

0:29:47.200 --> 0:29:49.680
<v Speaker 1>think now is a good time to, uh take a

0:29:49.720 --> 0:29:53.080
<v Speaker 1>look at a chapter from a book by the biologist

0:29:53.120 --> 0:29:56.480
<v Speaker 1>David Resnick, who I mentioned earlier. And this book is

0:29:56.520 --> 0:30:00.280
<v Speaker 1>called The Origin, Then and Now, An Interpretive guy to

0:30:00.720 --> 0:30:04.520
<v Speaker 1>the Origin of Species that was published by Princeton University

0:30:04.560 --> 0:30:07.400
<v Speaker 1>Press in two thousand eleven. And in a chapter on

0:30:08.240 --> 0:30:12.440
<v Speaker 1>in this book, Resident discusses the specific example of the

0:30:12.480 --> 0:30:16.400
<v Speaker 1>London London underground mosquito and whether or not it is

0:30:16.800 --> 0:30:21.000
<v Speaker 1>speciation and what what this means for the concept of speciation.

0:30:21.680 --> 0:30:25.920
<v Speaker 1>Uh So, a central question in biology. How long does

0:30:25.960 --> 0:30:29.240
<v Speaker 1>it take for evolution to form a new species? How

0:30:29.280 --> 0:30:32.240
<v Speaker 1>long should you have to wait? Obviously this could depend

0:30:32.280 --> 0:30:34.600
<v Speaker 1>on a lot of different factors. Right, You've got different

0:30:34.720 --> 0:30:38.920
<v Speaker 1>mutation rates, maybe um if mutations are sort of providing

0:30:38.960 --> 0:30:42.920
<v Speaker 1>the changes that lead to new new body forms and

0:30:42.920 --> 0:30:46.640
<v Speaker 1>stuff like that, You've got different selection pressures, you've got

0:30:46.640 --> 0:30:50.800
<v Speaker 1>different rates of reproduction. You're probably more likely to see

0:30:50.840 --> 0:30:55.200
<v Speaker 1>faster revolution in organisms that produce more generations in a

0:30:55.240 --> 0:30:59.200
<v Speaker 1>short period of time, like we're mentioning earlier, like bacteria

0:30:59.360 --> 0:31:01.800
<v Speaker 1>or even like in sects like fruit flies and stuff,

0:31:02.240 --> 0:31:04.920
<v Speaker 1>very quick turnover. I mean, that's why something why fruit fly.

0:31:05.120 --> 0:31:06.920
<v Speaker 1>One of the reasons fruit flies are used so much

0:31:06.960 --> 0:31:09.200
<v Speaker 1>in research because you can you can watch this occur,

0:31:09.640 --> 0:31:12.960
<v Speaker 1>and certainly when you find examples of evolution and action,

0:31:13.080 --> 0:31:16.000
<v Speaker 1>so called evolution and action, that's what you're looking at

0:31:16.000 --> 0:31:19.959
<v Speaker 1>species that have those really really tight turnaround in reproduction.

0:31:20.120 --> 0:31:24.440
<v Speaker 1>But another thing that often leads to UH speciation, at

0:31:24.480 --> 0:31:27.640
<v Speaker 1>least as far as we think, is having highly specific

0:31:27.840 --> 0:31:32.600
<v Speaker 1>different selection pressures, putting a group in isolation and then

0:31:32.680 --> 0:31:36.520
<v Speaker 1>making it uh very hard for that group to live

0:31:36.640 --> 0:31:40.640
<v Speaker 1>except by one or two ways, and this tends to

0:31:40.720 --> 0:31:44.520
<v Speaker 1>force adaptation to those new ways of life, which produces

0:31:44.560 --> 0:31:47.320
<v Speaker 1>it creates kind of a narrow adaptive bottleneck through which

0:31:47.360 --> 0:31:51.000
<v Speaker 1>genes have to pass. So um Resnick says in his

0:31:51.040 --> 0:31:53.920
<v Speaker 1>book that he's not certain that these mosquitoes in the

0:31:53.920 --> 0:31:58.680
<v Speaker 1>London under London Underground constitute a different species, but he

0:31:58.760 --> 0:32:01.480
<v Speaker 1>argues that if they're not a distinct species, they're definitely

0:32:01.600 --> 0:32:04.520
<v Speaker 1>on the way. In the quote, they have moved far

0:32:04.640 --> 0:32:09.680
<v Speaker 1>down the path toward forming a reproductively isolated network of populations,

0:32:09.960 --> 0:32:13.000
<v Speaker 1>which is the currently accepted definition of species. So that's

0:32:13.000 --> 0:32:15.760
<v Speaker 1>going to what we said a minute ago, reproductive isolation.

0:32:16.320 --> 0:32:18.719
<v Speaker 1>What what we generally think of as a species is

0:32:18.880 --> 0:32:21.719
<v Speaker 1>breeds with with its own kind, doesn't breed with others.

0:32:22.400 --> 0:32:25.080
<v Speaker 1>So let's review what we've said so far and add

0:32:25.120 --> 0:32:27.960
<v Speaker 1>a few more things about our observations about the difference

0:32:28.000 --> 0:32:31.200
<v Speaker 1>between standard cool ex Pippians and then the ones down

0:32:31.240 --> 0:32:34.840
<v Speaker 1>in the tube. So, like we said, uh, surface cool

0:32:34.840 --> 0:32:37.800
<v Speaker 1>ex pippians mate in these swarms and open areas. The

0:32:37.840 --> 0:32:42.880
<v Speaker 1>subterranean ones made in close cramped conditions. Um. You mentioned

0:32:42.920 --> 0:32:46.560
<v Speaker 1>the winter hibernation. That's an interesting one because the surface

0:32:46.560 --> 0:32:50.640
<v Speaker 1>pippians have what's known as a seasonal dia pause because

0:32:50.800 --> 0:32:52.560
<v Speaker 1>come on, I mean, they live all the way up

0:32:52.600 --> 0:32:56.520
<v Speaker 1>in Britain. Cold winter is not a good place for mosquitoes,

0:32:56.520 --> 0:32:59.040
<v Speaker 1>so it gets really cold up there during the cold

0:32:59.040 --> 0:33:02.200
<v Speaker 1>weather months. Pippians stop mating, they build up a store

0:33:02.200 --> 0:33:05.080
<v Speaker 1>of fat reserves, and they essentially hunker down to wait

0:33:05.120 --> 0:33:10.000
<v Speaker 1>out the cold weather. Um, subterranean Pippians they don't have

0:33:10.000 --> 0:33:12.200
<v Speaker 1>winter to deal with. It's, you know, pretty much the

0:33:12.240 --> 0:33:15.640
<v Speaker 1>same climate year round down there in the tubes, fairly warm,

0:33:15.800 --> 0:33:19.120
<v Speaker 1>so they don't have this seasonal diapause anymore. They stay

0:33:19.120 --> 0:33:21.640
<v Speaker 1>active all year, they stay breeding all year. They just

0:33:21.720 --> 0:33:24.520
<v Speaker 1>keep going. They're like a fine wine in a wine

0:33:24.520 --> 0:33:31.240
<v Speaker 1>cellar hermetically sealed and just kept it a constant aging aging,

0:33:32.080 --> 0:33:36.720
<v Speaker 1>acquiring finesse um by fighting rat kings, and then beautiful

0:33:36.800 --> 0:33:42.240
<v Speaker 1>red liquid as well. Yeah, so another one. We mentioned

0:33:42.280 --> 0:33:45.960
<v Speaker 1>this before. Surface pippians feed almost exclusively on bird blood, right.

0:33:46.320 --> 0:33:49.000
<v Speaker 1>The subterranean pippians don't have access to many birds for

0:33:49.080 --> 0:33:51.959
<v Speaker 1>obvious reasons. Though this didn't make me think when we

0:33:51.960 --> 0:33:55.280
<v Speaker 1>were talking about it earlier that it would be really

0:33:55.280 --> 0:34:00.280
<v Speaker 1>cool to have a speciation event producing subterranean birds, like

0:34:00.640 --> 0:34:06.000
<v Speaker 1>like albino subterranean vultures that only live in I don't know,

0:34:06.080 --> 0:34:08.520
<v Speaker 1>subway tunnels or caves or some other'd be great. I

0:34:08.520 --> 0:34:10.760
<v Speaker 1>guess the like the closest thing that comes to mind

0:34:10.800 --> 0:34:13.080
<v Speaker 1>would be some I guess something like a kiwi. You

0:34:13.120 --> 0:34:16.560
<v Speaker 1>know that's kind of like a ground dwelling like semi

0:34:16.640 --> 0:34:21.120
<v Speaker 1>burrowing bird. They burrow. I didn't know that kiwi's uh

0:34:21.239 --> 0:34:24.239
<v Speaker 1>if I remember correctly, uh and u Qwi experts can

0:34:24.480 --> 0:34:27.319
<v Speaker 1>can correct me in this. They do. They do some

0:34:27.400 --> 0:34:29.960
<v Speaker 1>sort of burrowing. Yeah, I mean not like full blown,

0:34:30.600 --> 0:34:34.239
<v Speaker 1>you know, tremmors burrowing, but they'll they dig around like

0:34:34.280 --> 0:34:37.480
<v Speaker 1>they live very close to the soil. Well, what I

0:34:37.560 --> 0:34:41.720
<v Speaker 1>want is bone white vultures with red eyes living exclusively

0:34:41.760 --> 0:34:43.960
<v Speaker 1>in caves. I could see it and see it happening.

0:34:43.960 --> 0:34:46.120
<v Speaker 1>I mean, I I look finally back on these. Uh,

0:34:46.280 --> 0:34:49.440
<v Speaker 1>these are these different flightless prehistoric birds. So I like

0:34:49.520 --> 0:34:53.160
<v Speaker 1>the idea of them returning in a subworld environment. Okay,

0:34:53.200 --> 0:34:56.399
<v Speaker 1>back to the pippians. So surface pippians, as we mentioned before,

0:34:56.480 --> 0:34:58.960
<v Speaker 1>also remember they get a blood meal before they produce

0:34:59.040 --> 0:35:00.960
<v Speaker 1>their eggs. You gotta get some blood then you lay

0:35:00.960 --> 0:35:04.080
<v Speaker 1>your eggs. The subterranean ones they can easily skip the

0:35:04.080 --> 0:35:07.839
<v Speaker 1>meal if necessary. Uh. The question would be why why

0:35:07.880 --> 0:35:09.960
<v Speaker 1>can they do that? Well, down in the tunnels there

0:35:10.040 --> 0:35:12.360
<v Speaker 1>is plenty to eat in the form of water based

0:35:12.400 --> 0:35:16.000
<v Speaker 1>microbial life that the larva consume in their larval stage.

0:35:16.719 --> 0:35:19.399
<v Speaker 1>The blood is more scarce, So if you can get

0:35:19.400 --> 0:35:22.560
<v Speaker 1>through your life cycle on on that, that's a good thing.

0:35:23.200 --> 0:35:26.640
<v Speaker 1>Now back to burn and nichols In as you mentioned. So,

0:35:26.640 --> 0:35:30.040
<v Speaker 1>so we said earlier that there are other subterranean mosquitoes

0:35:30.080 --> 0:35:32.239
<v Speaker 1>elsewhere in the world, right did we mention that? I

0:35:32.239 --> 0:35:35.440
<v Speaker 1>think we did. Um, the ones in the London underground

0:35:35.440 --> 0:35:38.480
<v Speaker 1>are not the only ones where where mosquitoes are dwelling

0:35:38.520 --> 0:35:41.160
<v Speaker 1>in some kind of underground space. But how can we

0:35:41.200 --> 0:35:44.520
<v Speaker 1>tell whether these mosquitoes in London, in the London underground

0:35:44.560 --> 0:35:49.320
<v Speaker 1>are a subterranean mosquitoes imported from somewhere else in the world,

0:35:50.080 --> 0:35:53.480
<v Speaker 1>You know how, because we've already discussed how how how

0:35:53.520 --> 0:35:57.240
<v Speaker 1>skilled they are at adapting to new new environments traveling

0:35:57.239 --> 0:36:01.480
<v Speaker 1>with humans, or are they surface missque autos from London

0:36:01.680 --> 0:36:04.880
<v Speaker 1>that moved underground and began to change. And this is

0:36:04.920 --> 0:36:07.920
<v Speaker 1>where the genetic testing you alluded to earlier comes in.

0:36:08.800 --> 0:36:13.040
<v Speaker 1>So you mentioned the mosquitoes collected from different sites throughout

0:36:13.080 --> 0:36:16.080
<v Speaker 1>the underground and throughout the surface. They got mosquitoes from

0:36:16.120 --> 0:36:19.400
<v Speaker 1>seven sites throughout the underground network and then twelve different

0:36:19.400 --> 0:36:22.520
<v Speaker 1>sites above the surface like gardens and ponds, And what

0:36:22.560 --> 0:36:26.040
<v Speaker 1>they wanted to look for was genetic variation at twenty

0:36:26.080 --> 0:36:30.560
<v Speaker 1>different loci within the genes, to see if the genes

0:36:30.560 --> 0:36:33.120
<v Speaker 1>of the underground mosquitoes matched the genes of the above

0:36:33.160 --> 0:36:37.320
<v Speaker 1>ground ones, or if they've got these unique allele's um

0:36:37.400 --> 0:36:41.440
<v Speaker 1>that would that would be matching to uh underground mosquitoes

0:36:41.440 --> 0:36:44.400
<v Speaker 1>from other places around the world. And what they found

0:36:44.560 --> 0:36:48.480
<v Speaker 1>was that the underground mosquitoes in London did not have

0:36:48.719 --> 0:36:52.279
<v Speaker 1>these unique alleles that were common to underground mosquitoes from

0:36:52.320 --> 0:36:55.279
<v Speaker 1>other places. They had the same alleles as their above

0:36:55.320 --> 0:36:59.720
<v Speaker 1>ground cousins in London. Another thing they found interestingly underground

0:36:59.800 --> 0:37:04.400
<v Speaker 1>miss guitos. Uh, maybe this isn't the correct term scientifically,

0:37:04.440 --> 0:37:07.400
<v Speaker 1>but they're kind of inbred. Like, well, that would make sense,

0:37:07.440 --> 0:37:09.839
<v Speaker 1>and then that comes back to death line, like this

0:37:09.920 --> 0:37:13.920
<v Speaker 1>is kind of a an inbred, uneducated creature that's so

0:37:14.080 --> 0:37:18.040
<v Speaker 1>walking around, right, So there's relative homogeneity in the genes

0:37:18.040 --> 0:37:20.640
<v Speaker 1>of the underground population compared to the surface. The ones

0:37:20.680 --> 0:37:23.240
<v Speaker 1>on the surface have a lot more genetic diversity because

0:37:23.280 --> 0:37:26.799
<v Speaker 1>they have a lot more different breeding options. The ones underground,

0:37:27.440 --> 0:37:29.160
<v Speaker 1>we're sort of like, I don't know, you might think

0:37:29.200 --> 0:37:31.799
<v Speaker 1>of them as like insect Baldwin brothers, you know, a

0:37:31.840 --> 0:37:34.759
<v Speaker 1>little bit of variation between them, but not as much

0:37:34.840 --> 0:37:39.279
<v Speaker 1>variation as you'd find within the general population. Um. So

0:37:39.680 --> 0:37:42.319
<v Speaker 1>this is also what you'd expect if you had a

0:37:42.400 --> 0:37:47.160
<v Speaker 1>small population of original mosquitoes that moved into the underground

0:37:47.200 --> 0:37:49.560
<v Speaker 1>and began breeding with each other and had just been

0:37:49.600 --> 0:37:53.879
<v Speaker 1>breeding with each other in their descendants ever since. So

0:37:54.040 --> 0:37:57.160
<v Speaker 1>what's the conclusion here, Well, it looks like a small

0:37:57.239 --> 0:38:01.360
<v Speaker 1>handful of colonists. Mosquitoes from the surface made this plunge

0:38:01.560 --> 0:38:04.719
<v Speaker 1>into the darkness sometime in the past, maybe very far back,

0:38:04.760 --> 0:38:07.759
<v Speaker 1>maybe when the tunnels were first being dug um, and

0:38:07.800 --> 0:38:11.120
<v Speaker 1>they managed to survive long and uh long enough and

0:38:11.160 --> 0:38:14.880
<v Speaker 1>to reproduce enough for the environment to begin to shape

0:38:14.920 --> 0:38:17.640
<v Speaker 1>their biology. But then again, as we mentioned, is it

0:38:17.680 --> 0:38:21.880
<v Speaker 1>a different species. This would really come down to the

0:38:21.960 --> 0:38:26.400
<v Speaker 1>aspects of reproductive isolation. If they can't interbreed, we probably

0:38:26.440 --> 0:38:30.120
<v Speaker 1>think it is uh, it is a different species. And

0:38:30.239 --> 0:38:34.319
<v Speaker 1>specifically it's if they can't interbreed producing viable offspring down

0:38:34.400 --> 0:38:38.040
<v Speaker 1>multiple generations, because some things might be able to interbreed

0:38:38.080 --> 0:38:41.839
<v Speaker 1>and produce an offspring that itself can't breed, right Yeah,

0:38:41.880 --> 0:38:43.800
<v Speaker 1>and this is where we get into the various sterile

0:38:44.520 --> 0:38:48.040
<v Speaker 1>hybrids that we see with other species. Right. So, what

0:38:48.160 --> 0:38:51.680
<v Speaker 1>Burne and Nichols found was that the underground mosquitoes could

0:38:51.719 --> 0:38:55.239
<v Speaker 1>interbreed with one another and produce fertile offspring, but every

0:38:55.280 --> 0:38:58.200
<v Speaker 1>time they tried to make a female underground mosquito with

0:38:58.239 --> 0:39:01.040
<v Speaker 1>a group of males from the surface, no eggs were produced.

0:39:01.400 --> 0:39:04.919
<v Speaker 1>Underground females can mate successfully with underground males, but not

0:39:05.080 --> 0:39:09.880
<v Speaker 1>usually with surface males um so Resinic points out another

0:39:09.920 --> 0:39:12.880
<v Speaker 1>really interesting thing from their research, which is how Burne

0:39:12.920 --> 0:39:17.600
<v Speaker 1>and Nichols also found evidence of mosquito colonists pushing the

0:39:17.640 --> 0:39:23.120
<v Speaker 1>boundaries of habitat tolerance in both directions, and so, for example,

0:39:23.640 --> 0:39:26.800
<v Speaker 1>at the Oval station in the other ground, they found

0:39:27.000 --> 0:39:31.200
<v Speaker 1>surface mosquitoes were trying to survive under the surface in

0:39:31.239 --> 0:39:33.920
<v Speaker 1>a flooded tunnel at the bottom of an open shaft.

0:39:34.360 --> 0:39:37.320
<v Speaker 1>They were trying to live underground, but they still these

0:39:38.080 --> 0:39:41.120
<v Speaker 1>surface mosquitoes trying to live underground still needed a blood

0:39:41.120 --> 0:39:43.960
<v Speaker 1>meal to produce eggs, and they couldn't breed with the

0:39:44.040 --> 0:39:49.560
<v Speaker 1>underground mosquitoes. Meanwhile, a colony of underground mosquitoes was discovered

0:39:49.600 --> 0:39:53.960
<v Speaker 1>biting humans in houses in southeast London. So they were

0:39:54.000 --> 0:39:56.799
<v Speaker 1>trying to migrate up and live on the surface, but

0:39:57.080 --> 0:40:00.759
<v Speaker 1>they were genetically similar to the underground mosquitoes, and unfortunately

0:40:00.840 --> 0:40:03.880
<v Speaker 1>for them, they don't know how to do this winter diapause,

0:40:04.120 --> 0:40:07.440
<v Speaker 1>you know, the seasonal diapause. They can't hunker down for

0:40:07.480 --> 0:40:09.799
<v Speaker 1>the cold weather, so when it comes along it will

0:40:09.840 --> 0:40:12.840
<v Speaker 1>smite them. Huh. See. Now this is an idea that

0:40:12.880 --> 0:40:16.400
<v Speaker 1>doesn't explored enough in our various weird fictions. Not the

0:40:16.440 --> 0:40:19.600
<v Speaker 1>idea that there's some sort of an underground humanoid species,

0:40:19.840 --> 0:40:22.440
<v Speaker 1>but the idea that the underground humanoid species then comes

0:40:22.520 --> 0:40:25.160
<v Speaker 1>up and maybe tries, you know, they try to get jobs,

0:40:26.040 --> 0:40:27.880
<v Speaker 1>they can't adapt, They move into a flat and they

0:40:27.880 --> 0:40:31.000
<v Speaker 1>just feel horribly because of course they're they're cannibalistic monsters. Well,

0:40:31.040 --> 0:40:35.000
<v Speaker 1>they'll they will be used to a very constant environmental

0:40:35.040 --> 0:40:38.200
<v Speaker 1>condition to you know, climate control essentially. You know, caves

0:40:38.200 --> 0:40:40.880
<v Speaker 1>are sort of climate controlled. When they come up to

0:40:40.920 --> 0:40:43.719
<v Speaker 1>the surface summer and winter, it's gonna be awful. They're

0:40:43.719 --> 0:40:45.799
<v Speaker 1>gonna be like, what is this water pouring out of

0:40:45.800 --> 0:40:49.279
<v Speaker 1>my armpits? I hate it? Uh you know, I guess

0:40:49.280 --> 0:40:51.560
<v Speaker 1>in a way, it's kind of the vampire myth as

0:40:51.600 --> 0:40:53.239
<v Speaker 1>we often encounter. It is kind of a play on

0:40:53.280 --> 0:40:55.520
<v Speaker 1>this because you think of you think of old Count

0:40:55.560 --> 0:40:59.120
<v Speaker 1>Dracula coming over to London imported like a mosquito and

0:40:59.160 --> 0:41:02.200
<v Speaker 1>then the hold of a ship um very limited in

0:41:02.280 --> 0:41:05.759
<v Speaker 1>what he can do outside during the day. Uh So,

0:41:05.760 --> 0:41:09.200
<v Speaker 1>so maybe it has been explored, uh you know, to

0:41:09.200 --> 0:41:13.880
<v Speaker 1>add nauseum already. Uh So the authors of the original study,

0:41:13.760 --> 0:41:16.279
<v Speaker 1>they were careful not actually to get drawn into a

0:41:16.360 --> 0:41:19.520
<v Speaker 1>big argument about whether the two populations are technically different

0:41:19.520 --> 0:41:21.680
<v Speaker 1>species or not, but they were more focused on the

0:41:21.719 --> 0:41:26.080
<v Speaker 1>process of speciation rather than trying to arbitrate the dividing line.

0:41:26.600 --> 0:41:30.880
<v Speaker 1>But even if these two mosquitoes are not now separate species,

0:41:31.120 --> 0:41:34.560
<v Speaker 1>they're clearly on the way there. So Resonic points out

0:41:34.640 --> 0:41:38.840
<v Speaker 1>that this provides an example of reproductive isolation in many

0:41:39.000 --> 0:41:42.400
<v Speaker 1>fewer generations than Darwin would have expected. And that's kind

0:41:42.400 --> 0:41:45.319
<v Speaker 1>of interesting, right. You know. Darwin thought, well, you need

0:41:45.360 --> 0:41:49.160
<v Speaker 1>maybe x many different generations to really produce a different species.

0:41:49.200 --> 0:41:52.560
<v Speaker 1>But if we're almost there or already there with these mosquitoes,

0:41:52.920 --> 0:41:55.760
<v Speaker 1>doesn't doesn't take nearly as long as Darwin would have guessed.

0:41:56.560 --> 0:41:58.840
<v Speaker 1>But then again, keep in mind that these are mosquitoes,

0:41:59.000 --> 0:42:01.759
<v Speaker 1>very fast reproduct of cycle, you know, their insects. The

0:42:01.800 --> 0:42:04.799
<v Speaker 1>same thing doesn't necessarily apply to oak trees or rhinoceros,

0:42:04.960 --> 0:42:11.000
<v Speaker 1>is alright, So if if reproductive isolation does happen is fast,

0:42:11.760 --> 0:42:15.040
<v Speaker 1>why well. Resinnick has a couple of hypotheses in his

0:42:15.160 --> 0:42:17.600
<v Speaker 1>chapter that I think are interesting. One of them is

0:42:18.160 --> 0:42:22.040
<v Speaker 1>the idea of disruptive selection. Uh. And the way he

0:42:22.080 --> 0:42:25.760
<v Speaker 1>explains this is that the survival requirements for the two

0:42:25.960 --> 0:42:30.680
<v Speaker 1>environments above ground and below ground are so different that

0:42:30.760 --> 0:42:34.080
<v Speaker 1>if you were to successfully make a surface pippions with

0:42:34.120 --> 0:42:38.440
<v Speaker 1>an underground pippions, it's offspring would very likely have fatal

0:42:38.520 --> 0:42:43.040
<v Speaker 1>deficiencies for either environment. What, you know, the traits you'd

0:42:43.080 --> 0:42:45.879
<v Speaker 1>get from your mom would make you unable to live

0:42:45.920 --> 0:42:48.440
<v Speaker 1>in dad's world. Where the traits you'd get from your

0:42:48.480 --> 0:42:52.160
<v Speaker 1>dad would make you unable to live in your mom's world. Uh.

0:42:52.200 --> 0:42:54.680
<v Speaker 1>And so if it's on the surface, cold weather might

0:42:54.760 --> 0:42:56.840
<v Speaker 1>kill it. If it's in the other ground, it doesn't

0:42:56.880 --> 0:42:59.279
<v Speaker 1>know how to hunt the right food, It can't put

0:42:59.320 --> 0:43:01.640
<v Speaker 1>off the blood yell that it you know, we'll have

0:43:01.680 --> 0:43:05.239
<v Speaker 1>a hard time finding or something like that. And this

0:43:05.360 --> 0:43:09.279
<v Speaker 1>prevents a kind of back interaction with the general population

0:43:09.800 --> 0:43:14.520
<v Speaker 1>of the underground mosquitoes and enforces genetic isolation. But another

0:43:14.520 --> 0:43:18.160
<v Speaker 1>way to possibly explain it would be changes in reproductive behavior.

0:43:18.719 --> 0:43:21.360
<v Speaker 1>So what if these two populations have diverged in a

0:43:21.400 --> 0:43:26.799
<v Speaker 1>way that specifically selected breeding behaviors that are incompatible. Uh.

0:43:26.920 --> 0:43:30.040
<v Speaker 1>Think of the open area swarming versus the confined space

0:43:30.080 --> 0:43:33.720
<v Speaker 1>breeding is just one example. They simply don't get down

0:43:33.840 --> 0:43:37.080
<v Speaker 1>with the way the other population tends to mate. So

0:43:37.200 --> 0:43:41.799
<v Speaker 1>mating doesn't happen reinforcing reproductive isolation, and as far as

0:43:41.800 --> 0:43:43.880
<v Speaker 1>I know, either of those are live options, or it

0:43:43.880 --> 0:43:47.080
<v Speaker 1>could be a combination. So something to keep in mind here.

0:43:47.120 --> 0:43:50.200
<v Speaker 1>As a Burn points out in the paper quote, the

0:43:50.239 --> 0:43:54.399
<v Speaker 1>differences between Pippins and Molestus forms seem to change from

0:43:54.440 --> 0:43:57.800
<v Speaker 1>place to place within the range of the species. The

0:43:57.840 --> 0:44:02.320
<v Speaker 1>ostensibly clear cut distinction between the Molestas and Pippians forms

0:44:02.480 --> 0:44:05.560
<v Speaker 1>in northern Europe is not so apparent in the northern

0:44:05.560 --> 0:44:10.640
<v Speaker 1>Mediterranean area and may disappear in some populations further south. Yeah,

0:44:10.680 --> 0:44:13.160
<v Speaker 1>and that makes sense because think about it. For example,

0:44:13.239 --> 0:44:15.880
<v Speaker 1>one major difference between the London surface and the London

0:44:15.960 --> 0:44:18.959
<v Speaker 1>underground is the presence or absence of this cold weather

0:44:19.040 --> 0:44:24.160
<v Speaker 1>diapause if there are If there are similar above and

0:44:24.200 --> 0:44:28.920
<v Speaker 1>below ground populations and consistently warm climates, they're just less

0:44:28.960 --> 0:44:32.040
<v Speaker 1>likely to have this difference, right, because the surface mosquitoes

0:44:32.080 --> 0:44:34.560
<v Speaker 1>don't need to become dormant for cold weather in a

0:44:34.600 --> 0:44:37.200
<v Speaker 1>place where there is no cold weather. Yes, that's a

0:44:37.200 --> 0:44:40.719
<v Speaker 1>good point. So Resinic discusses a few other interesting takeaways

0:44:40.719 --> 0:44:43.080
<v Speaker 1>in this chapter. One is to simply cast a sort

0:44:43.120 --> 0:44:47.040
<v Speaker 1>of doubt on the total relevance of distinctions between species. Like,

0:44:47.080 --> 0:44:50.200
<v Speaker 1>on one hand, it's very scientifically useful to have labels

0:44:50.200 --> 0:44:53.319
<v Speaker 1>for things that are alike in order to separate them

0:44:53.320 --> 0:44:56.160
<v Speaker 1>from things that they are unlike. Uh. And and really

0:44:56.200 --> 0:44:58.440
<v Speaker 1>that very notion is at the core of what science is,

0:44:58.520 --> 0:45:02.239
<v Speaker 1>right categorization of Miller things with one another. But it's

0:45:02.239 --> 0:45:04.759
<v Speaker 1>also true that these boundaries are kind of porous and

0:45:04.800 --> 0:45:07.800
<v Speaker 1>that the concept of a species does not actually operate

0:45:07.880 --> 0:45:11.600
<v Speaker 1>in reality. And reality there are things. There are genes,

0:45:11.640 --> 0:45:17.080
<v Speaker 1>their chromosomes, their phenotypic traits, there are environments. A species

0:45:17.160 --> 0:45:20.680
<v Speaker 1>is more kind of a concept, and Resinic writes, quote,

0:45:20.800 --> 0:45:24.640
<v Speaker 1>species in nature should be thought of as fluid mosaics

0:45:24.800 --> 0:45:30.160
<v Speaker 1>of populations that are becoming locally adapted uh, sometimes with

0:45:30.239 --> 0:45:35.160
<v Speaker 1>the aid of similar adaptations attained by long extinct populations

0:45:35.160 --> 0:45:38.400
<v Speaker 1>that adapted to similar environments. So a couple of interesting

0:45:38.440 --> 0:45:42.560
<v Speaker 1>things there. One is this idea of species just being

0:45:42.600 --> 0:45:46.480
<v Speaker 1>many individuals with genes that are always in flux. Things

0:45:46.520 --> 0:45:51.200
<v Speaker 1>are coming and going. It's not a standard, totally defined

0:45:51.360 --> 0:45:57.160
<v Speaker 1>thing with boundaries. It's just a family of resemblances. And

0:45:57.200 --> 0:45:59.760
<v Speaker 1>then the other thing is that the last part about

0:46:00.000 --> 0:46:04.600
<v Speaker 1>Miller adaptations attained from long extinct populations. One thing that

0:46:04.680 --> 0:46:08.600
<v Speaker 1>often appears to happen in cases of reproductive isolation is

0:46:08.640 --> 0:46:11.560
<v Speaker 1>that some rare gene in the general population that doesn't

0:46:11.560 --> 0:46:15.440
<v Speaker 1>seem to do much or provide much advantage, suddenly becomes

0:46:15.560 --> 0:46:19.720
<v Speaker 1>useful in a specific environment and it becomes selected four,

0:46:19.760 --> 0:46:22.319
<v Speaker 1>and it gets pumped up and becomes more prevalent and

0:46:22.400 --> 0:46:26.400
<v Speaker 1>comes to define the new population. And it's very possible

0:46:26.920 --> 0:46:30.239
<v Speaker 1>that this gene was something that was useful to an

0:46:30.280 --> 0:46:33.600
<v Speaker 1>ancestor of this current population. So it's like that you

0:46:33.680 --> 0:46:37.440
<v Speaker 1>can adapt by pulling antiques out of the past when

0:46:37.480 --> 0:46:41.240
<v Speaker 1>they suddenly become useful again, you might need that blunderbuss,

0:46:41.280 --> 0:46:44.680
<v Speaker 1>not now, but sometime in the future. Yeah. Indeed, I

0:46:44.680 --> 0:46:47.160
<v Speaker 1>mean we we see this in various experiments where they're

0:46:47.200 --> 0:46:51.279
<v Speaker 1>like they switched the epogenetic switch to say, um, you know,

0:46:51.400 --> 0:46:55.279
<v Speaker 1>make chickens a little more like dinosaurs again. Yeah, some

0:46:55.640 --> 0:46:59.640
<v Speaker 1>tweaking some one aspect of their anatomy because that option

0:46:59.719 --> 0:47:01.440
<v Speaker 1>is still They're like that, like the options in a

0:47:01.560 --> 0:47:04.680
<v Speaker 1>video game shouldn't need to be turned on. Um. And

0:47:04.719 --> 0:47:08.440
<v Speaker 1>hopefully I didn't anthropomorphizes evolution too much. For some of

0:47:08.440 --> 0:47:11.239
<v Speaker 1>our listeners, there. Oh, we just got a complaint about that. Yeah,

0:47:11.320 --> 0:47:14.280
<v Speaker 1>well you know sometimes, but that was also from somebody

0:47:14.280 --> 0:47:17.840
<v Speaker 1>who didn't believe in evolution, So okay, they saically they

0:47:17.840 --> 0:47:22.560
<v Speaker 1>didn't think we went far enough. All right. Well, on

0:47:22.600 --> 0:47:25.399
<v Speaker 1>that note, we actually asked you did we go too far?

0:47:25.800 --> 0:47:29.080
<v Speaker 1>Did we not go far enough? But more importantly, I'd

0:47:29.080 --> 0:47:31.960
<v Speaker 1>love to hear from anybody who you know, shares our

0:47:32.000 --> 0:47:35.400
<v Speaker 1>love for underground transit systems. I'd love to hear from

0:47:35.400 --> 0:47:40.120
<v Speaker 1>anyone who's ever been bitten by a London underground mosquito. Yeah,

0:47:40.480 --> 0:47:43.840
<v Speaker 1>did you feel the proboscis? Yeah, of the mollst us

0:47:43.960 --> 0:47:45.720
<v Speaker 1>or you know. It would be great if anyone's listening

0:47:45.719 --> 0:47:50.440
<v Speaker 1>to this podcast on the train in the London underground,

0:47:50.680 --> 0:47:54.560
<v Speaker 1>if they are bitten by a mosquito during this podcast.

0:47:54.800 --> 0:47:56.759
<v Speaker 1>I think that would be a pretty magical moment as well.

0:47:57.520 --> 0:48:02.719
<v Speaker 1>This mach al right. Well, on that note, hey, if

0:48:02.719 --> 0:48:05.280
<v Speaker 1>you want to check out more information on this topic,

0:48:05.760 --> 0:48:07.760
<v Speaker 1>go to the landing page for this episode at stuff

0:48:07.800 --> 0:48:09.879
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0:48:10.040 --> 0:48:13.000
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0:48:13.040 --> 0:48:15.280
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0:48:15.280 --> 0:48:18.839
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0:48:18.880 --> 0:48:22.040
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0:48:22.040 --> 0:48:26.840
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0:48:27.160 --> 0:48:31.160
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0:48:31.280 --> 0:48:33.440
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0:48:33.800 --> 0:48:36.600
<v Speaker 1>the subway and deal with rats and mosquitoes or what

0:48:36.680 --> 0:48:38.680
<v Speaker 1>have you. For my own part, I'm a big fan

0:48:38.760 --> 0:48:41.480
<v Speaker 1>of Ideas with Paul Kennedy. Yeah, yeah, yeah. It's a

0:48:41.520 --> 0:48:45.560
<v Speaker 1>wonderful Canadian radio show podcast fixed for a number of

0:48:45.680 --> 0:48:51.560
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0:48:56.480 --> 0:48:58.880
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0:48:58.960 --> 0:49:02.439
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0:49:14.640 --> 0:49:27.600
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