1 00:00:03,840 --> 00:00:06,720 Speaker 1: Welcome to Stuff to Blow Your Mind from how Stuff 2 00:00:06,720 --> 00:00:13,800 Speaker 1: Works dot com. Hey, welcome to Stuff to Blow your Mind. 3 00:00:13,840 --> 00:00:16,800 Speaker 1: My name is Robert Lamb and I'm Julie Douglas. We're 4 00:00:16,800 --> 00:00:19,080 Speaker 1: doing a couple of episodes here where we're really getting 5 00:00:19,079 --> 00:00:23,920 Speaker 1: into the idea of genetic memory, which is the snazzier 6 00:00:23,920 --> 00:00:25,560 Speaker 1: way of looking at if you want to get really technical, 7 00:00:25,600 --> 00:00:28,479 Speaker 1: we are going to be talking about epigenetics. Don't be 8 00:00:28,520 --> 00:00:31,240 Speaker 1: scared off by that. UM. I understand the temptation to 9 00:00:31,320 --> 00:00:34,040 Speaker 1: be scared off by it because I've written about epigenetics 10 00:00:34,120 --> 00:00:37,360 Speaker 1: before and uh. And it can be in a way 11 00:00:37,400 --> 00:00:41,280 Speaker 1: a very dense topic because you are getting down to um, 12 00:00:41,360 --> 00:00:45,919 Speaker 1: how the genome corresponds to the phenotype, how the contents 13 00:00:45,920 --> 00:00:49,120 Speaker 1: of our genes is expressed, the phenotype is the expression 14 00:00:49,320 --> 00:00:52,000 Speaker 1: of our genes. Um. So we can get a bit 15 00:00:52,040 --> 00:00:54,480 Speaker 1: technical when you get into that, but ultimately we are 16 00:00:54,520 --> 00:01:00,600 Speaker 1: talking about how the secrets written in ourselves, how thoseterialized 17 00:01:00,600 --> 00:01:03,040 Speaker 1: as the person we are, both in terms of our 18 00:01:04,080 --> 00:01:08,280 Speaker 1: our our body and in terms of our mind. Uh. 19 00:01:08,319 --> 00:01:11,760 Speaker 1: And we ultimately really get into the conversation about nature 20 00:01:11,760 --> 00:01:15,360 Speaker 1: and nurture concerning animals and humans. So we're splitting it up, 21 00:01:15,360 --> 00:01:18,240 Speaker 1: we have this first episode about the animals. It's often 22 00:01:18,280 --> 00:01:21,160 Speaker 1: a little easier to to look at the that something 23 00:01:21,200 --> 00:01:24,679 Speaker 1: as uh as complex as this with the animals first, 24 00:01:24,720 --> 00:01:27,640 Speaker 1: and certainly that's where most of the experiments are gonna 25 00:01:27,800 --> 00:01:30,600 Speaker 1: taking place. And then after that we'll get into the 26 00:01:30,680 --> 00:01:34,280 Speaker 1: human realm and the various human ramifications when we complicate 27 00:01:34,360 --> 00:01:36,800 Speaker 1: things with all of our human baggage. Yeah, the idea 28 00:01:36,840 --> 00:01:40,160 Speaker 1: here is we want to recast our ideas about evolution 29 00:01:40,360 --> 00:01:43,840 Speaker 1: and also disease and how we can gain phenotypes the 30 00:01:43,880 --> 00:01:47,640 Speaker 1: expression of these genes, uh, for for the better really. 31 00:01:48,120 --> 00:01:50,600 Speaker 1: And in order to really get into this discussion, we 32 00:01:50,640 --> 00:01:54,480 Speaker 1: have to talk about this guy named Gene Baptiste Lamarck 33 00:01:54,840 --> 00:02:00,720 Speaker 1: or Gene eighteenth century French scientists and naturalists and and uh. 34 00:02:00,800 --> 00:02:04,919 Speaker 1: He had some some very interesting ideas about how animals 35 00:02:05,120 --> 00:02:08,920 Speaker 1: change over time, essentially about evolution, and he's most cited 36 00:02:09,639 --> 00:02:13,160 Speaker 1: example is that of the giraffes. He argued that, okay, 37 00:02:13,280 --> 00:02:14,800 Speaker 1: you look at the draft wanted to draft of a 38 00:02:14,840 --> 00:02:17,880 Speaker 1: long neck. Well, Darwin's answer would be that they're all 39 00:02:17,919 --> 00:02:21,639 Speaker 1: these various mutations over time, and some of those mutations 40 00:02:21,680 --> 00:02:25,080 Speaker 1: involved longer necks. And since the longer necks were a 41 00:02:25,080 --> 00:02:28,240 Speaker 1: better survival adaptation. Those are the ones that survived and 42 00:02:28,240 --> 00:02:32,160 Speaker 1: flourished wanted on. The mutations with the shorter necks didn't 43 00:02:32,160 --> 00:02:34,800 Speaker 1: pan out so well. Right, So longer neck naturally selected 44 00:02:34,840 --> 00:02:38,160 Speaker 1: for taking a long time to be selected. Right. We're 45 00:02:38,160 --> 00:02:41,600 Speaker 1: not just talking about one or two generations. Lamark's idea, though, 46 00:02:41,720 --> 00:02:44,239 Speaker 1: is that you have this giraffe, imagine the short neck giraffe, 47 00:02:44,280 --> 00:02:47,680 Speaker 1: and he looks up or she looks up at the call. 48 00:02:47,800 --> 00:02:51,120 Speaker 1: Cindy looks up at the at the fruit in the tree. Yeah, 49 00:02:51,760 --> 00:02:54,840 Speaker 1: Cindy's and Cindy's and her cohorts have already eaten all 50 00:02:54,880 --> 00:02:57,079 Speaker 1: the low hanging fruit. They want the high hanging fruit, right, 51 00:02:57,240 --> 00:03:00,000 Speaker 1: They want to reach up higher. So she's straining her 52 00:03:00,840 --> 00:03:03,680 Speaker 1: she's looking up there. I want to eat those top fruit. 53 00:03:04,639 --> 00:03:09,640 Speaker 1: And then Cindy's offspring have the same desire, and the 54 00:03:09,680 --> 00:03:12,760 Speaker 1: offspring after that. There's this there's this need to reach 55 00:03:13,440 --> 00:03:16,639 Speaker 1: the higher hanging fruit from generation to generation, and from 56 00:03:16,639 --> 00:03:25,600 Speaker 1: generation to generation. The neck longands enough coffee this morning. Long, 57 00:03:25,880 --> 00:03:29,280 Speaker 1: So already I'm thinking about Cindy from Brady Punch, whispering 58 00:03:29,360 --> 00:03:33,440 Speaker 1: her desires to to reach the foliage length right, and 59 00:03:33,480 --> 00:03:36,520 Speaker 1: then her offspring all lispening their desire to reach the 60 00:03:36,520 --> 00:03:40,040 Speaker 1: foliage too and getting there. Because here's the Lamark deal. 61 00:03:40,480 --> 00:03:43,080 Speaker 1: In his view, some giraffes managed to stretch their necks 62 00:03:43,200 --> 00:03:45,040 Speaker 1: over out over the course of their lifetime, giving them 63 00:03:45,080 --> 00:03:47,720 Speaker 1: an advantage of other giraffes, which then what we're talking 64 00:03:47,720 --> 00:03:49,440 Speaker 1: about is passing on to their children. This is a 65 00:03:49,560 --> 00:03:55,080 Speaker 1: really quick acquisition of traits here, and this is really 66 00:03:55,080 --> 00:03:59,400 Speaker 1: what the story comes down to, acquiring traits versus genetic mutations. 67 00:03:59,760 --> 00:04:03,080 Speaker 1: Now out with Lamarck right when he was talking about 68 00:04:03,080 --> 00:04:07,200 Speaker 1: these droffs, well for a while, no, for he was 69 00:04:07,240 --> 00:04:09,600 Speaker 1: dead wrong in this example. Yeah, I mean he was 70 00:04:09,640 --> 00:04:13,800 Speaker 1: pretty much. This was considered the archaic idea, and we're 71 00:04:13,840 --> 00:04:16,599 Speaker 1: not archaic, but an outdated idea that was that was 72 00:04:17,200 --> 00:04:21,400 Speaker 1: it was far outperformed by Darwin's theory of evolution. So 73 00:04:21,520 --> 00:04:24,880 Speaker 1: Darwin's theory becomes the predominant way that we make sense 74 00:04:25,040 --> 00:04:29,360 Speaker 1: of these changes over time. But it does turn out 75 00:04:29,480 --> 00:04:33,160 Speaker 1: that Lamarck was onto something um and his you know, 76 00:04:33,200 --> 00:04:36,080 Speaker 1: his theory was dismissed for a long time as malarkey, Like, 77 00:04:36,080 --> 00:04:40,400 Speaker 1: how I did that? Lamar Malarkey Lamarca malarkey. Yeah. But 78 00:04:40,600 --> 00:04:44,400 Speaker 1: when epigenetics really came onto the scene in the seventies 79 00:04:44,440 --> 00:04:47,039 Speaker 1: and more lately in the last ten years, people have 80 00:04:47,160 --> 00:04:50,760 Speaker 1: been looking at Lamarky and evolution again because our better 81 00:04:50,839 --> 00:04:55,240 Speaker 1: understanding of epigenetics makes what he was talking about possible. 82 00:04:55,320 --> 00:05:00,839 Speaker 1: So epigenetics, Okay, you have genetics with the geno, and 83 00:05:00,839 --> 00:05:03,520 Speaker 1: then you have this thing called epigenetic, which literally means 84 00:05:03,839 --> 00:05:08,120 Speaker 1: in addition to genetics. Um, and this exists, and these 85 00:05:08,160 --> 00:05:11,520 Speaker 1: changes exist between the genome and the phenotype. Now I 86 00:05:11,600 --> 00:05:13,679 Speaker 1: like to think of this in terms of video games. 87 00:05:13,960 --> 00:05:16,560 Speaker 1: It works for me, it'll work for some of you guys. Um, 88 00:05:16,760 --> 00:05:21,160 Speaker 1: think of a flight simulator. Okay, you you put a 89 00:05:21,279 --> 00:05:23,720 Speaker 1: load of flights that simulator up on the computer, right 90 00:05:24,040 --> 00:05:25,760 Speaker 1: and uh, and you can go in there and you 91 00:05:25,800 --> 00:05:28,560 Speaker 1: pretend to fly this airplane. Now, if you go in there, 92 00:05:28,600 --> 00:05:32,000 Speaker 1: you go into the settings for this particular game, you 93 00:05:32,080 --> 00:05:37,680 Speaker 1: can alter the realism of the flight experience. Okay, So 94 00:05:37,920 --> 00:05:39,839 Speaker 1: think of it. Think of this way. The game engine, 95 00:05:40,960 --> 00:05:46,479 Speaker 1: the game itself, This is the genome. Your actual game 96 00:05:46,520 --> 00:05:50,640 Speaker 1: playing experience is the phenotype the expression right, and in 97 00:05:50,720 --> 00:05:54,279 Speaker 1: between there you have epigenetics. You have the settings menu 98 00:05:54,520 --> 00:05:56,400 Speaker 1: where you can where you can click on or click 99 00:05:56,440 --> 00:05:58,240 Speaker 1: off all these little things like, oh, you don't want 100 00:05:58,279 --> 00:06:00,960 Speaker 1: planes to be able to collide and there you don't 101 00:06:01,040 --> 00:06:03,359 Speaker 1: want to ever run out of fuel. You want you know, 102 00:06:03,440 --> 00:06:06,440 Speaker 1: unlimited uh, emma whatever. You can adjust those settings to 103 00:06:06,520 --> 00:06:10,200 Speaker 1: have any anywhere between a highly realistic flight simulation and 104 00:06:10,240 --> 00:06:13,200 Speaker 1: an arcade shoot them up, depending on how those settings 105 00:06:13,240 --> 00:06:17,240 Speaker 1: are gamed. And so with an organism, you see a 106 00:06:17,360 --> 00:06:20,160 Speaker 1: very similar thing. You have the you have the genome, 107 00:06:20,760 --> 00:06:23,680 Speaker 1: which says this is what the organism is going to 108 00:06:23,760 --> 00:06:25,440 Speaker 1: be like, this is what the phenotype is going to be, 109 00:06:25,560 --> 00:06:28,159 Speaker 1: this is what the experience, the game experience that we 110 00:06:28,200 --> 00:06:30,440 Speaker 1: live every day is going to consist of. And then 111 00:06:30,440 --> 00:06:33,400 Speaker 1: you have all these various settings in between, these ways, 112 00:06:33,640 --> 00:06:36,960 Speaker 1: these epigenetic changes that affect the way that the genes 113 00:06:37,000 --> 00:06:40,200 Speaker 1: are expressed. That's right, because at the heart of epigenetics 114 00:06:40,320 --> 00:06:43,160 Speaker 1: is really the study of these changes in gene activity 115 00:06:43,200 --> 00:06:47,000 Speaker 1: that don't involve alterations to the genetic code, right, but 116 00:06:47,080 --> 00:06:50,359 Speaker 1: they still get passed down to at least one successive generation. 117 00:06:50,880 --> 00:06:53,039 Speaker 1: So again, think about the flight simulator that you just 118 00:06:53,040 --> 00:06:57,520 Speaker 1: talked about, and think about um let me see it. 119 00:06:57,600 --> 00:07:00,920 Speaker 1: Let's think about the genome is the hardware, and epigenome 120 00:07:01,080 --> 00:07:04,000 Speaker 1: as the software. Okay, so you can load Windows if 121 00:07:04,000 --> 00:07:06,040 Speaker 1: you want on your Mac. Okay, I think about it 122 00:07:06,080 --> 00:07:10,360 Speaker 1: that way. So I think now about this epigenome, that 123 00:07:10,560 --> 00:07:13,920 Speaker 1: extracellular material that is sitting on top of the genome, 124 00:07:14,560 --> 00:07:18,560 Speaker 1: and it's these epigenetic marks or proteins that tell your 125 00:07:18,600 --> 00:07:22,320 Speaker 1: genes to switch on or off. And it's through epigenetic 126 00:07:22,360 --> 00:07:26,520 Speaker 1: marks that environmental factors like diet, stress and prenatal nutrition 127 00:07:26,600 --> 00:07:29,360 Speaker 1: can make an imprint on those genes that are passed 128 00:07:29,360 --> 00:07:31,920 Speaker 1: on from one generation to the next. So we're we're 129 00:07:31,920 --> 00:07:34,680 Speaker 1: talking about this because this is really amazing stuff because 130 00:07:34,720 --> 00:07:37,360 Speaker 1: what you can do is you could you can impact 131 00:07:37,680 --> 00:07:42,000 Speaker 1: your your future offspring in a very significant way without 132 00:07:42,120 --> 00:07:47,040 Speaker 1: changing your own DNA. And we essentially see Lamarckian evolution 133 00:07:47,160 --> 00:07:50,360 Speaker 1: return in this or some semblance of the idea, only 134 00:07:51,040 --> 00:07:56,440 Speaker 1: we call it transgenerational epigenetic inheritance. So it's the settings 135 00:07:56,480 --> 00:07:59,240 Speaker 1: that to end up being put in place in one 136 00:07:59,280 --> 00:08:03,800 Speaker 1: generation passing on to subsequent generations. UM. So it's like 137 00:08:03,880 --> 00:08:05,880 Speaker 1: you know, a father had the realism settings on his 138 00:08:06,360 --> 00:08:10,320 Speaker 1: flight simulator set to about and then that same those 139 00:08:10,360 --> 00:08:13,000 Speaker 1: same settings pass on to the offspring, even if you 140 00:08:13,040 --> 00:08:14,800 Speaker 1: know they're in a more arcade culture. I'm kind of 141 00:08:14,800 --> 00:08:17,160 Speaker 1: stretching the metaphor, but I think you get what I'm saying, 142 00:08:17,160 --> 00:08:18,920 Speaker 1: all right. So you're probably saying, well, how in the 143 00:08:18,920 --> 00:08:21,480 Speaker 1: world does this happen? Anyway, what is the mechanism for 144 00:08:21,600 --> 00:08:26,440 Speaker 1: delivering these changes? And that is something called DNA methylation. Okay, 145 00:08:26,440 --> 00:08:30,200 Speaker 1: So that's how you game gene expression, the phenotype, how 146 00:08:30,200 --> 00:08:32,320 Speaker 1: a gene is expressed turned on or off in an 147 00:08:32,320 --> 00:08:35,480 Speaker 1: epig genome. So it takes only the addition of a 148 00:08:35,520 --> 00:08:38,280 Speaker 1: methyl group to change an epigenome. And a methyl group 149 00:08:38,400 --> 00:08:41,319 Speaker 1: is a basic unit in organic chemistry. We're talking one 150 00:08:41,360 --> 00:08:45,720 Speaker 1: carbon atom attached to three hydrogen atoms. And when a 151 00:08:45,800 --> 00:08:48,520 Speaker 1: methyl group attached to a specific spot on a gene, 152 00:08:48,880 --> 00:08:52,000 Speaker 1: this is what we call DNA methyl ish methylation, and 153 00:08:52,080 --> 00:08:54,400 Speaker 1: it changes that genes expression, turning it on and off, 154 00:08:54,520 --> 00:08:57,959 Speaker 1: dampening it, making it louder. The choices are all there, right, 155 00:08:58,880 --> 00:09:02,680 Speaker 1: So think of methylate and as chemical bundles that enzions 156 00:09:02,760 --> 00:09:05,480 Speaker 1: hitch a ride to DNA on and then they have 157 00:09:05,600 --> 00:09:10,560 Speaker 1: the ability to manipulate jeans. You with me here, all right, 158 00:09:10,800 --> 00:09:14,199 Speaker 1: You guys out there with us UM in the methylization 159 00:09:14,240 --> 00:09:17,679 Speaker 1: patterns can be affected by again external environment and then 160 00:09:17,720 --> 00:09:20,520 Speaker 1: get passed on to offspring because they are maintained through 161 00:09:20,600 --> 00:09:23,240 Speaker 1: cell division. Yeah, they can change drastically in the course 162 00:09:23,280 --> 00:09:25,640 Speaker 1: of a lifetime, but they can also as well discussed 163 00:09:25,679 --> 00:09:28,640 Speaker 1: they can be said permanently during embryo development. So it 164 00:09:28,840 --> 00:09:32,720 Speaker 1: depends on various factors and that affect the distribution of 165 00:09:32,760 --> 00:09:36,839 Speaker 1: methyl groups. So we have an example here of um 166 00:09:37,120 --> 00:09:41,680 Speaker 1: one sort of DNA methyl methylation in process in nature, 167 00:09:41,720 --> 00:09:43,960 Speaker 1: and this is with mice. This is in a two 168 00:09:43,960 --> 00:09:48,200 Speaker 1: thousand and three Duke University study by oncologist Randy Jurtle 169 00:09:48,720 --> 00:09:51,920 Speaker 1: in one of his postdoc students, Robert Waderland. They tinkered 170 00:09:51,960 --> 00:09:57,080 Speaker 1: with genetics using mice with a uniquely regulated a Goudy gene. Okay, 171 00:09:57,080 --> 00:10:00,400 Speaker 1: so this a Goudy gene gives mice yellow coat and 172 00:10:00,640 --> 00:10:05,040 Speaker 1: propensity for obesity and diabetes when expressed continuously. So what 173 00:10:05,080 --> 00:10:07,640 Speaker 1: did they do to to these mice, Well, they gave 174 00:10:07,720 --> 00:10:11,480 Speaker 1: them a one group of them a diet rich envitamin B, 175 00:10:11,640 --> 00:10:15,440 Speaker 1: so we're talking about folic acid and B twelve. Another 176 00:10:15,480 --> 00:10:18,280 Speaker 1: group they did nothing to. What they found is that 177 00:10:18,320 --> 00:10:22,240 Speaker 1: the vitamin B acted as methyl donors. They caused methyl 178 00:10:22,240 --> 00:10:26,600 Speaker 1: groups to attach more frequently to that Goudy gene, essentially 179 00:10:26,720 --> 00:10:31,760 Speaker 1: dampening it, turning it off, altering its expression. So without 180 00:10:31,800 --> 00:10:34,880 Speaker 1: even messing with the d NA, what happened is that 181 00:10:34,960 --> 00:10:39,760 Speaker 1: those mice with the gouty gene produced healthy offspring that 182 00:10:39,920 --> 00:10:42,760 Speaker 1: had brown coats. They were normal weight, and they were 183 00:10:42,760 --> 00:10:47,280 Speaker 1: not prone to diabetes. Just with this one aspect of nutrition. 184 00:10:48,320 --> 00:10:51,280 Speaker 1: There's another really cool example that is often sided involving 185 00:10:51,280 --> 00:10:55,560 Speaker 1: water fleas in a predator heavy environment. The creatures developed 186 00:10:55,559 --> 00:10:58,679 Speaker 1: these large defensive spines on their bodies, all right, because 187 00:10:58,720 --> 00:11:02,080 Speaker 1: the world has become danger so they they load up, 188 00:11:02,160 --> 00:11:04,720 Speaker 1: you know, they develop these spikes. It's a harsh world, 189 00:11:04,760 --> 00:11:07,679 Speaker 1: so they they grow the weapons they need to defend themselves, 190 00:11:07,960 --> 00:11:10,559 Speaker 1: and then the trait will pass on to the offspring, 191 00:11:11,080 --> 00:11:14,160 Speaker 1: even if those offspring are raised in a predator free setting. 192 00:11:14,440 --> 00:11:18,440 Speaker 1: So it's another example of to personify evolution a bit 193 00:11:18,840 --> 00:11:23,160 Speaker 1: here and and personify genetic expression. The fleet, the water 194 00:11:23,160 --> 00:11:25,520 Speaker 1: fleet body is saying, all right, it's a it's a 195 00:11:25,600 --> 00:11:29,120 Speaker 1: bad world. Let's grow these spines, and then the offspring 196 00:11:29,160 --> 00:11:31,360 Speaker 1: is gonna be born into what can only be presumed 197 00:11:31,360 --> 00:11:33,320 Speaker 1: to be a bad environment as well, so it better 198 00:11:33,320 --> 00:11:35,400 Speaker 1: have the spines right out of the gate. Yeah. So, 199 00:11:35,440 --> 00:11:38,199 Speaker 1: I mean if La Mark was alive today, he would say, 200 00:11:38,200 --> 00:11:41,079 Speaker 1: who's laughing? Now? Right? You know it's correct in some sense. 201 00:11:41,320 --> 00:11:42,880 Speaker 1: All Right, we're gonna take a quick break, and when 202 00:11:42,880 --> 00:11:44,600 Speaker 1: we get back, we're going to talk about some very 203 00:11:44,640 --> 00:11:49,040 Speaker 1: cool examples of this in round worms and uh, mice 204 00:11:49,240 --> 00:11:58,679 Speaker 1: and wrap Okay, we're back. Uh. We're talking about genetics. 205 00:11:58,720 --> 00:12:02,959 Speaker 1: We're talking about an expression in a large sense. We're 206 00:12:02,960 --> 00:12:06,120 Speaker 1: talking about nature and nurture and how these these different 207 00:12:07,080 --> 00:12:10,880 Speaker 1: genetic factors in different environmental factors effect who and what 208 00:12:11,400 --> 00:12:14,720 Speaker 1: an organism happens to be in life. So we're looking 209 00:12:14,720 --> 00:12:16,800 Speaker 1: at animals in this episode. In the next episode we'll 210 00:12:16,800 --> 00:12:18,839 Speaker 1: get into humans. We're talking about a lot of the 211 00:12:18,840 --> 00:12:22,079 Speaker 1: different organisms that we experiment on and then we analyze 212 00:12:22,120 --> 00:12:25,080 Speaker 1: and attempt to understand the genetics better. And this brings us, 213 00:12:25,080 --> 00:12:28,280 Speaker 1: of course to the roundworm. Yeah. This, Uh, These roundworms 214 00:12:28,320 --> 00:12:31,320 Speaker 1: are of great interest to researchers because it turns out 215 00:12:31,400 --> 00:12:35,000 Speaker 1: that they have a built in immunity to viruses or 216 00:12:35,040 --> 00:12:38,880 Speaker 1: whether they can cultivate this built in immunity. So researchers 217 00:12:39,080 --> 00:12:43,000 Speaker 1: at Columbia University found that these roundworms were able to 218 00:12:43,040 --> 00:12:46,000 Speaker 1: develop a resistance to a virus and then they were 219 00:12:46,040 --> 00:12:50,200 Speaker 1: able to pass along that immunity for successive generations UM. 220 00:12:50,360 --> 00:12:54,080 Speaker 1: According to an ION nine article, they do this through 221 00:12:54,400 --> 00:12:58,480 Speaker 1: r in a interference or are in a I. And 222 00:12:58,600 --> 00:13:01,400 Speaker 1: this process is used by cell to mute certain genes 223 00:13:01,520 --> 00:13:04,120 Speaker 1: and is often used to beat back viruses and other 224 00:13:04,240 --> 00:13:06,680 Speaker 1: threats to the genome. This is really cool. This is 225 00:13:06,720 --> 00:13:09,680 Speaker 1: like a defense system right here, sitting outside your your genome. 226 00:13:10,320 --> 00:13:15,160 Speaker 1: UM RNA I destroys messenger RNA or mr rna, which 227 00:13:15,200 --> 00:13:17,960 Speaker 1: is really important here because that's what's needed to communicate 228 00:13:17,960 --> 00:13:22,640 Speaker 1: with various genes. So without their mr NA, genes basically 229 00:13:22,679 --> 00:13:26,200 Speaker 1: shut down and become inactive. Yeah. And it was particularly 230 00:13:26,200 --> 00:13:30,079 Speaker 1: interesting with study UH two thousand eleven Columbia University study 231 00:13:30,840 --> 00:13:33,840 Speaker 1: because they set it up so that the roundworms couldn't 232 00:13:33,840 --> 00:13:37,520 Speaker 1: gain immunity in the Darwinian fashion like they had they 233 00:13:37,559 --> 00:13:40,720 Speaker 1: had to do. It was it was Lamarck or nothing 234 00:13:41,480 --> 00:13:42,840 Speaker 1: if this is gonna happen, and they did and they 235 00:13:42,880 --> 00:13:47,240 Speaker 1: actually observed this transgenerational process. So what's really cool here 236 00:13:47,360 --> 00:13:50,600 Speaker 1: is that the researchers found that even a hundred generations 237 00:13:50,679 --> 00:13:53,839 Speaker 1: at the initial effects infection, the round worms still carried 238 00:13:53,880 --> 00:13:57,920 Speaker 1: the immunity acquired by their distant ancestor. Yeah, hud. Now, 239 00:13:57,920 --> 00:14:00,640 Speaker 1: granted a hundred generations is a little different and around 240 00:14:01,080 --> 00:14:03,640 Speaker 1: than in a human but still you can definitely see 241 00:14:03,679 --> 00:14:08,400 Speaker 1: the survival advantage in ensuring that subsequent generations benefit from 242 00:14:08,400 --> 00:14:13,559 Speaker 1: the same protection against a viral enemy that's still out there. Well, 243 00:14:13,600 --> 00:14:16,319 Speaker 1: and you can also see why researchers would be chumping 244 00:14:16,320 --> 00:14:17,960 Speaker 1: at the bit to study this more because how could 245 00:14:17,960 --> 00:14:20,800 Speaker 1: you gain this for humans? Right? What what sort of 246 00:14:20,800 --> 00:14:25,120 Speaker 1: defense system could we UH create for ourselves if possible? 247 00:14:25,680 --> 00:14:28,480 Speaker 1: So of course it leads to more tinkering there. Um. 248 00:14:28,680 --> 00:14:34,160 Speaker 1: And speaking of tinkering and UH studies experiments, we will 249 00:14:34,200 --> 00:14:36,120 Speaker 1: have to of course go back to mice. So, yeah, 250 00:14:36,160 --> 00:14:39,360 Speaker 1: there was a tough University School of Medicine UH study 251 00:14:39,400 --> 00:14:41,200 Speaker 1: in two thousand nine. And what they did is they 252 00:14:41,240 --> 00:14:44,560 Speaker 1: took some mice that they genetically engineered to have memory problems, 253 00:14:45,120 --> 00:14:48,240 Speaker 1: and then they raised them in U an enriched environment. 254 00:14:48,280 --> 00:14:53,120 Speaker 1: So there's an environment full of toys and exercise social interaction. Um, 255 00:14:53,160 --> 00:14:55,120 Speaker 1: you know, so like working at Google or something. For 256 00:14:55,160 --> 00:14:57,960 Speaker 1: these four mice, UH and they did this for two 257 00:14:58,000 --> 00:15:01,280 Speaker 1: weeks during the adolescence for the for these animals, and 258 00:15:01,280 --> 00:15:04,840 Speaker 1: they found that the animal's memory improved. Uh. And granted 259 00:15:04,880 --> 00:15:07,360 Speaker 1: this is expected to a certain degree because we know 260 00:15:07,480 --> 00:15:11,160 Speaker 1: that enrichment has been shown to boost brain function. That's 261 00:15:11,160 --> 00:15:13,880 Speaker 1: why you you want to enrich young children, you want 262 00:15:13,920 --> 00:15:16,840 Speaker 1: to enrich the lives of indoor pats. I mean, it's 263 00:15:16,840 --> 00:15:19,640 Speaker 1: it's it's what enrichment is about. That's why we seek 264 00:15:19,640 --> 00:15:22,640 Speaker 1: out knowledge as we're doing right now, right um. But 265 00:15:22,800 --> 00:15:27,160 Speaker 1: what they found specifically is that the memory gene here 266 00:15:27,560 --> 00:15:30,040 Speaker 1: that carried the mutation is called r A, S, g 267 00:15:30,400 --> 00:15:33,440 Speaker 1: r F are the genes that regulate a signaling pathway 268 00:15:33,640 --> 00:15:37,600 Speaker 1: that's involved in brain cell communication. So that's what was 269 00:15:38,040 --> 00:15:41,800 Speaker 1: improved here. But the coolest thing is that the next generation, 270 00:15:42,600 --> 00:15:44,920 Speaker 1: even though they had this gene, they had this mutated gene, 271 00:15:45,040 --> 00:15:47,640 Speaker 1: they had better memories. So again, what we saw here 272 00:15:47,680 --> 00:15:52,520 Speaker 1: is that DNA methylation process occurring, dampening the gene for 273 00:15:52,560 --> 00:15:55,280 Speaker 1: the next generation. So we're not going to keep a 274 00:15:55,360 --> 00:15:59,000 Speaker 1: running score for the nature versus nurture battle, but this 275 00:15:59,040 --> 00:16:01,960 Speaker 1: one would certainly be victory for for nurture. So yeah, 276 00:16:02,000 --> 00:16:05,760 Speaker 1: TuS University neuroscientists. Larry five had said that a striking 277 00:16:05,800 --> 00:16:08,400 Speaker 1: feature of the study is that enrichment took place during 278 00:16:08,560 --> 00:16:13,040 Speaker 1: pre adolescents, months before the mice were even fertile, yet 279 00:16:13,160 --> 00:16:16,720 Speaker 1: the effect reached into the next generation. So that was surprising. 280 00:16:16,760 --> 00:16:18,880 Speaker 1: And we'll talk a little a bit about that more 281 00:16:19,080 --> 00:16:23,280 Speaker 1: with humans. UM, but we know that when UM, when 282 00:16:23,320 --> 00:16:28,080 Speaker 1: an organism is going through its prenatal period, that what 283 00:16:28,160 --> 00:16:30,680 Speaker 1: the mother does can't affect it. But what this is 284 00:16:30,680 --> 00:16:34,400 Speaker 1: telling us here is that even before the mice were 285 00:16:34,440 --> 00:16:37,680 Speaker 1: able to reproduce, that was affecting the genes of their 286 00:16:37,720 --> 00:16:40,720 Speaker 1: eventual offspring. Yeah. I mean it makes sense again when 287 00:16:40,720 --> 00:16:44,040 Speaker 1: you've stripped down all of our human expectations of life 288 00:16:44,080 --> 00:16:46,360 Speaker 1: and get down to the basic genetic mission of any 289 00:16:46,440 --> 00:16:49,360 Speaker 1: organism to spread its genes and pass it onto offspring, 290 00:16:49,520 --> 00:16:51,440 Speaker 1: like right out of the gate. That is what it 291 00:16:51,520 --> 00:16:53,880 Speaker 1: is here on earth to do. So we look at 292 00:16:53,920 --> 00:16:57,320 Speaker 1: another aspect here of memory, and this is called long 293 00:16:57,440 --> 00:16:59,520 Speaker 1: term potential ation, and again we look at it in 294 00:16:59,560 --> 00:17:03,400 Speaker 1: mice and Larry Fogg's team did a secondary study on this. 295 00:17:03,520 --> 00:17:06,199 Speaker 1: The same research group looked at this. They wanted to 296 00:17:06,240 --> 00:17:10,840 Speaker 1: look at LPT, long term potential ation LPT strengthens communication 297 00:17:10,880 --> 00:17:14,880 Speaker 1: between neurons and it increases memory. So again they had 298 00:17:14,920 --> 00:17:20,320 Speaker 1: mice with a genetically faulty LPT expression and these, uh, 299 00:17:20,359 --> 00:17:23,240 Speaker 1: this LPT was essentially fixed again when they were put 300 00:17:23,359 --> 00:17:27,879 Speaker 1: in an enriched environment. So of course, what do we 301 00:17:27,920 --> 00:17:31,639 Speaker 1: see happen with offspring? They turned out better even and 302 00:17:31,680 --> 00:17:35,120 Speaker 1: this is the crazy part. The puffs demonstrated this improved 303 00:17:35,160 --> 00:17:38,720 Speaker 1: the same improvemental process even when they were raised by 304 00:17:38,920 --> 00:17:41,919 Speaker 1: memory deficient mice that had never had any of the 305 00:17:42,000 --> 00:17:45,320 Speaker 1: or these are rich enrichment benefits. So in this you 306 00:17:45,400 --> 00:17:47,840 Speaker 1: kind of see a little bit of the like the 307 00:17:47,960 --> 00:17:51,919 Speaker 1: victory maybe not of nature but of nurtured nature, so 308 00:17:52,000 --> 00:17:55,119 Speaker 1: a little bit of both. Yeah, you're right, both of 309 00:17:55,200 --> 00:17:59,159 Speaker 1: them are definitely entangled here. But again, the big news 310 00:17:59,200 --> 00:18:02,680 Speaker 1: here is that, um that this gene was switched off 311 00:18:02,760 --> 00:18:06,080 Speaker 1: and game fixed it in one generation through enrichment and 312 00:18:06,119 --> 00:18:09,960 Speaker 1: then bad parenting in the next generation didn't just automatically 313 00:18:10,080 --> 00:18:12,680 Speaker 1: turn it off. So it's it shows that it's a 314 00:18:12,680 --> 00:18:15,040 Speaker 1: little more complicated than that and also a little more 315 00:18:15,080 --> 00:18:19,439 Speaker 1: fool proof. Now yeah, now these are all touchy feely examples, right, 316 00:18:19,440 --> 00:18:22,680 Speaker 1: because we're improving things. What what if you're a researcher, 317 00:18:22,760 --> 00:18:24,600 Speaker 1: and you want to see the opposite. You want to 318 00:18:25,359 --> 00:18:29,480 Speaker 1: see what happens when you have rats that are abused, UM, 319 00:18:29,640 --> 00:18:32,960 Speaker 1: that are raised by stressed mothers that neglect and physically 320 00:18:32,960 --> 00:18:37,240 Speaker 1: abuse their offspring. UM. What will those offspring show in 321 00:18:37,359 --> 00:18:43,000 Speaker 1: their epigenetic modifications. Well, sadly showed that the the abused 322 00:18:43,000 --> 00:18:45,080 Speaker 1: my screw to be poor mothers as well and appear 323 00:18:45,119 --> 00:18:47,840 Speaker 1: to pass down the same epigenetic changes to their offspring, 324 00:18:48,359 --> 00:18:52,240 Speaker 1: which you know closely mirrors sort of the expected cycles 325 00:18:52,280 --> 00:18:55,960 Speaker 1: that one sees, you know, even in humans. Yeah, and 326 00:18:56,000 --> 00:19:00,000 Speaker 1: the twist here too is that the offspring of the 327 00:19:00,080 --> 00:19:05,040 Speaker 1: use of mothers was then raised by healthy mothers, and 328 00:19:05,160 --> 00:19:08,440 Speaker 1: although that did help with some of some of their behavior, 329 00:19:09,040 --> 00:19:13,639 Speaker 1: it didn't It did not dampen um the expression of 330 00:19:13,640 --> 00:19:18,199 Speaker 1: that behavior as the other DNA effylation did and the 331 00:19:18,200 --> 00:19:21,600 Speaker 1: other scene that we saw with mice. So it helped, 332 00:19:21,680 --> 00:19:24,200 Speaker 1: but it did not fix it. Yeah, and it again 333 00:19:24,280 --> 00:19:28,240 Speaker 1: underlines that we're talking about a complex interaction of nurture 334 00:19:28,240 --> 00:19:31,640 Speaker 1: and nature. That it's it's not just oh well, nature 335 00:19:31,720 --> 00:19:32,959 Speaker 1: is gonna went out in this case and they're just 336 00:19:32,960 --> 00:19:35,720 Speaker 1: gonna went out in the other. It's epigenetics is is 337 00:19:35,760 --> 00:19:38,239 Speaker 1: a little more involved, and I think that you know 338 00:19:38,359 --> 00:19:40,520 Speaker 1: that's that's the idea that you carry away from this 339 00:19:40,640 --> 00:19:42,320 Speaker 1: is that it's not just one or the other. It's 340 00:19:42,359 --> 00:19:46,280 Speaker 1: not just nature versus nurture. It is definitely a nuance 341 00:19:46,320 --> 00:19:50,760 Speaker 1: of both. But it's also not just Darwinian evolution versus 342 00:19:51,080 --> 00:19:55,640 Speaker 1: Lamarchian evolution. These also work in tandem, because we're still 343 00:19:55,680 --> 00:19:59,920 Speaker 1: living in a Darwinian world. We just have some Wamarki 344 00:20:00,040 --> 00:20:02,960 Speaker 1: in expression. Yeah, there are various ways that our genes 345 00:20:03,000 --> 00:20:05,480 Speaker 1: can be expressed in the final phenotype, and a lot 346 00:20:05,480 --> 00:20:08,359 Speaker 1: of that is determined by environment, by the way we're 347 00:20:08,400 --> 00:20:11,520 Speaker 1: brought up, by just whatever kind of situation that our 348 00:20:11,520 --> 00:20:15,000 Speaker 1: bodies are and ourselves are put into. But of course this, 349 00:20:15,000 --> 00:20:17,719 Speaker 1: this UH is all very exciting because what does this 350 00:20:17,840 --> 00:20:20,879 Speaker 1: mean for humans When you have such stark examples in 351 00:20:21,040 --> 00:20:25,960 Speaker 1: nature of the epigenome um and its ability to to 352 00:20:26,080 --> 00:20:29,960 Speaker 1: be expressed differently in subsequent generations, what does that mean 353 00:20:30,000 --> 00:20:32,040 Speaker 1: to us? Well, there are two ways to look at 354 00:20:32,080 --> 00:20:33,720 Speaker 1: and we'll get into more of this in the next podcast. 355 00:20:33,760 --> 00:20:35,480 Speaker 1: But on one hand, it does give you the option 356 00:20:35,520 --> 00:20:38,520 Speaker 1: to freak out about every little thing in life in 357 00:20:38,840 --> 00:20:41,880 Speaker 1: concerning your own upbringing. That you know that your your children, 358 00:20:42,520 --> 00:20:45,600 Speaker 1: your children's children, you can really begin to to over 359 00:20:45,640 --> 00:20:48,480 Speaker 1: analyze every little detail. Also, as we continue to map 360 00:20:48,520 --> 00:20:51,960 Speaker 1: out the epigenome, it gives us an increased ability to 361 00:20:52,000 --> 00:20:55,439 Speaker 1: potentially go in there and and adjust these settings uh 362 00:20:55,680 --> 00:20:59,359 Speaker 1: as one potentially as one would the realism settings and 363 00:20:59,480 --> 00:21:03,840 Speaker 1: flights and later instead of leaving it purely to environmental changes. Yeah, 364 00:21:03,920 --> 00:21:07,120 Speaker 1: it's really cool is that the Human Epigenome Project UM 365 00:21:07,400 --> 00:21:10,040 Speaker 1: just like the Human Genome Project. They are trying to 366 00:21:10,119 --> 00:21:13,280 Speaker 1: map it UM. Now that the Genome Project has done 367 00:21:13,359 --> 00:21:17,080 Speaker 1: in the and the ability to do that is is 368 00:21:17,280 --> 00:21:21,560 Speaker 1: um much more within grasp. The epigenome should be done 369 00:21:21,720 --> 00:21:24,760 Speaker 1: fairly soon, and the kinds of stories that will come 370 00:21:24,760 --> 00:21:27,680 Speaker 1: out of that will be I think of a mind 371 00:21:27,760 --> 00:21:31,159 Speaker 1: blowing quality once they sort of passed through everything that 372 00:21:31,240 --> 00:21:34,520 Speaker 1: they can unravel and everything that unfolds, and begin to 373 00:21:34,600 --> 00:21:37,359 Speaker 1: apply it to us. Yeah, and and figure out what 374 00:21:37,400 --> 00:21:39,000 Speaker 1: they can turn on and what they can't turn off. 375 00:21:39,040 --> 00:21:41,280 Speaker 1: I mean, who knows what's in there because I've I've 376 00:21:41,280 --> 00:21:46,600 Speaker 1: read the examples of being able to um. It's it's 377 00:21:46,680 --> 00:21:48,479 Speaker 1: like toy with chickens, so that they're a little more 378 00:21:48,560 --> 00:21:52,480 Speaker 1: like dinosaurs just by tinkering around, what's various epigenetic changes? Um, 379 00:21:52,520 --> 00:21:55,280 Speaker 1: you know, granted they're they're probably would not be able 380 00:21:55,320 --> 00:21:57,360 Speaker 1: to go in and just suddenly make spines growing grow 381 00:21:57,400 --> 00:22:00,440 Speaker 1: out of our backs. But but we have spoken a 382 00:22:00,520 --> 00:22:05,160 Speaker 1: good bit about some of the the various physiological things 383 00:22:05,240 --> 00:22:09,160 Speaker 1: that that humans have left behind in their evolution, and uh, 384 00:22:09,280 --> 00:22:11,080 Speaker 1: and I can't help but wonder, like which of them 385 00:22:11,080 --> 00:22:13,440 Speaker 1: are still there, like the whole um, like the spiny 386 00:22:13,440 --> 00:22:16,800 Speaker 1: penis thing that we discussed, Yeah, is that still on 387 00:22:16,840 --> 00:22:19,879 Speaker 1: the table? I don't know, have genetics answer the question? 388 00:22:19,920 --> 00:22:22,480 Speaker 1: I hope. So now I'm just thinking of urban chicken 389 00:22:22,640 --> 00:22:27,080 Speaker 1: chicken coops and cities with with different phenotypes express and 390 00:22:27,119 --> 00:22:29,119 Speaker 1: it's sort of like dinosaur chickens running around. You have 391 00:22:29,160 --> 00:22:32,600 Speaker 1: a little velocity raptor chickens. Yeah, that's the future, folks, 392 00:22:33,080 --> 00:22:36,800 Speaker 1: wrap it up right there. Yeah, So definitely tune into 393 00:22:36,800 --> 00:22:38,840 Speaker 1: the next episode because that's gonna be the one where 394 00:22:38,840 --> 00:22:42,600 Speaker 1: we're gonna talk about some of the findings involving experiments 395 00:22:42,800 --> 00:22:47,520 Speaker 1: about humans, about human epigenetics, how these various how these 396 00:22:47,560 --> 00:22:52,080 Speaker 1: various environmental changes affect uh, the expression of of our 397 00:22:52,119 --> 00:22:54,960 Speaker 1: of our genomes in the final phenotype. And we'll also 398 00:22:55,080 --> 00:22:57,879 Speaker 1: do a little pondering to a little more a little 399 00:22:57,880 --> 00:23:00,800 Speaker 1: more philosophical stuff there at the end of that pticular episode. 400 00:23:00,840 --> 00:23:03,120 Speaker 1: So let's call the robot over here and uh get 401 00:23:03,160 --> 00:23:08,320 Speaker 1: a little listener mail. Oh now, this one's pretty exciting. Um, 402 00:23:08,359 --> 00:23:11,600 Speaker 1: I mean, that's I find it exciting. We heard from Tim. 403 00:23:11,600 --> 00:23:15,280 Speaker 1: Tim writes in in response to our nutmeg episode and says, Hi, guys, 404 00:23:15,280 --> 00:23:17,399 Speaker 1: my name is Tim, and I come from Dutch parents. 405 00:23:17,760 --> 00:23:20,120 Speaker 1: Wanted to share with you something that I grew up with. 406 00:23:20,160 --> 00:23:22,960 Speaker 1: My parents and grandparents used to put this stuff in everything. 407 00:23:23,359 --> 00:23:25,040 Speaker 1: I'm not sure if you can even buy it in 408 00:23:25,080 --> 00:23:27,560 Speaker 1: the States. They have it sent to them from a friend. 409 00:23:27,600 --> 00:23:30,320 Speaker 1: It's a mixture of nutmeg and other things, and to 410 00:23:30,359 --> 00:23:32,919 Speaker 1: be honest, it's excellent, wonderful of putting your hot chocolate 411 00:23:33,040 --> 00:23:35,520 Speaker 1: or over Christmas drinks. Pick some up if you can. 412 00:23:35,640 --> 00:23:39,760 Speaker 1: And he indeed sent a couple of photographs so that 413 00:23:39,840 --> 00:23:44,560 Speaker 1: we might describe this product. It is called Let's let's see. 414 00:23:44,600 --> 00:23:50,320 Speaker 1: The brand is Silvo and it's cook and speculous cruden, 415 00:23:51,400 --> 00:23:58,720 Speaker 1: and its ingredients appear to be cattle cruden, Aguellen Newton 416 00:23:58,800 --> 00:24:05,160 Speaker 1: musket gimber warter, carda mom which is maybe cardaman yeah, 417 00:24:05,240 --> 00:24:09,040 Speaker 1: and uh and white pepper so um which one of 418 00:24:09,080 --> 00:24:12,400 Speaker 1: those was nutmeg muscott Do you think is nutmeg? That's 419 00:24:12,400 --> 00:24:15,280 Speaker 1: what I was thinking. Yeah, but I think the crazy 420 00:24:15,280 --> 00:24:17,879 Speaker 1: thing about that is uh. And why he says that 421 00:24:17,960 --> 00:24:19,560 Speaker 1: he's not even sure if that you could buy that 422 00:24:19,640 --> 00:24:23,040 Speaker 1: state side is because that is a massive amount of nutmeg. 423 00:24:23,119 --> 00:24:27,479 Speaker 1: It's like a deodorant stickful of nutmeg. And as we know, 424 00:24:28,040 --> 00:24:33,639 Speaker 1: nutmeg has hallucinery or hallucinogenic properties when ingested in large quantities. 425 00:24:34,560 --> 00:24:38,240 Speaker 1: So I don't know that stuff on the street quite 426 00:24:38,240 --> 00:24:40,920 Speaker 1: a dime. Well, you know, as we discussed Penny, because 427 00:24:40,920 --> 00:24:43,840 Speaker 1: remember we talked about it's not really the consensus was, 428 00:24:44,480 --> 00:24:46,399 Speaker 1: but it's not really worth anybody's time. No, no, no no, 429 00:24:46,840 --> 00:24:49,359 Speaker 1: not not in large quantities. And large quantities, it's a 430 00:24:49,480 --> 00:24:51,600 Speaker 1: nightmare and it's awful, But of course, in small quantities. 431 00:24:51,640 --> 00:24:54,320 Speaker 1: On a regular basis, nutmeg has a number of positive 432 00:24:54,320 --> 00:24:56,880 Speaker 1: health benefits. Lovely on your hot cocoa or latte. I've 433 00:24:56,880 --> 00:24:59,600 Speaker 1: been having it on my coffee every morning pretty much 434 00:24:59,600 --> 00:25:02,040 Speaker 1: since we did that episode because I like nutmeg and 435 00:25:02,080 --> 00:25:05,000 Speaker 1: I'm and if there's any even remote chance that I'll 436 00:25:05,040 --> 00:25:07,159 Speaker 1: have a health benefit from it, then why not. I 437 00:25:07,200 --> 00:25:09,840 Speaker 1: even had a nutmeg infused root beer the other night. 438 00:25:09,920 --> 00:25:13,080 Speaker 1: It was great. Did you brew the root beer yourself? No, 439 00:25:13,119 --> 00:25:15,080 Speaker 1: it was like some brand, like they have a special 440 00:25:15,200 --> 00:25:17,840 Speaker 1: Bavarian nutmeg version of their root beer. You get a 441 00:25:17,880 --> 00:25:20,639 Speaker 1: big They have it at that little market in near 442 00:25:20,640 --> 00:25:23,760 Speaker 1: your house, so check it out, all right, all right, 443 00:25:23,800 --> 00:25:26,480 Speaker 1: And here's one from Trevor. Trevor writes and says hello. 444 00:25:27,200 --> 00:25:29,800 Speaker 1: I live in a on a twenty five ft sailboat 445 00:25:29,880 --> 00:25:33,399 Speaker 1: near downtown Seattle, more specifically Lake Union. I don't have 446 00:25:33,480 --> 00:25:36,359 Speaker 1: cable or internet, and I rely on reading books and 447 00:25:36,400 --> 00:25:40,200 Speaker 1: listening to your podcasts streamed through Stitcher on my iPhone 448 00:25:40,240 --> 00:25:43,960 Speaker 1: for entertainment. I've avoided cabin fever and seasonal depression thanks 449 00:25:43,960 --> 00:25:46,920 Speaker 1: to the information and knowledge I've gained through your podcast. 450 00:25:47,000 --> 00:25:49,960 Speaker 1: Please continue your work because it's keeping me saying and informed. 451 00:25:50,200 --> 00:25:54,240 Speaker 1: Most importantly saying that that was a lovely email to 452 00:25:54,280 --> 00:25:57,200 Speaker 1: get there because or actually that was on Facebook, I think, 453 00:25:57,880 --> 00:26:02,560 Speaker 1: because I mean in my job, in our job, we're 454 00:26:02,640 --> 00:26:06,320 Speaker 1: kind of shackle to the internet somewhat, so I know 455 00:26:06,359 --> 00:26:08,560 Speaker 1: that I sometimes feel like it wouldn't be nice to 456 00:26:08,560 --> 00:26:11,119 Speaker 1: be able to just really step away from the Internet 457 00:26:11,200 --> 00:26:13,080 Speaker 1: a bit, which I don't think I've really done. And 458 00:26:14,160 --> 00:26:17,760 Speaker 1: close to a decade now, well, Trevor is definitely living 459 00:26:18,080 --> 00:26:20,680 Speaker 1: my dream. I'm not kidding. Yeah, I mean, I've always 460 00:26:20,720 --> 00:26:22,760 Speaker 1: wanted to live and this is gonna sound weird, but 461 00:26:22,840 --> 00:26:24,520 Speaker 1: on a boat in a major city, so that you 462 00:26:24,520 --> 00:26:27,760 Speaker 1: would have access to everything that a city provides, but 463 00:26:27,840 --> 00:26:30,800 Speaker 1: you could just take off whenever. And here's a little 464 00:26:30,840 --> 00:26:33,040 Speaker 1: weird thing is that I have had this fantasy in 465 00:26:33,080 --> 00:26:36,200 Speaker 1: my mind for so many years that I mentally wanted 466 00:26:36,240 --> 00:26:38,359 Speaker 1: to prepare myself and I would only use a pairing 467 00:26:38,440 --> 00:26:40,480 Speaker 1: knife because I figured that if I ever lived in 468 00:26:40,520 --> 00:26:42,080 Speaker 1: a boat and used the kitchen, I would only have 469 00:26:42,119 --> 00:26:45,439 Speaker 1: one knife. You've been training for this for years and 470 00:26:45,480 --> 00:26:47,840 Speaker 1: I didn't realize to what extent. And tell my husband, 471 00:26:47,840 --> 00:26:50,679 Speaker 1: who is always like, why do you why there's a 472 00:26:50,720 --> 00:26:53,879 Speaker 1: bevy of nine, and I finally fessed up. I was like, 473 00:26:53,880 --> 00:26:55,800 Speaker 1: because one day I might live on a boat and 474 00:26:55,800 --> 00:26:58,359 Speaker 1: I have to get used to just this one knife. Wow. 475 00:26:58,760 --> 00:27:01,480 Speaker 1: I have to admit that early on I never really 476 00:27:01,520 --> 00:27:04,800 Speaker 1: wanted that for myself. But occasionally I'll read a book, 477 00:27:05,080 --> 00:27:06,439 Speaker 1: you know, they had someone living on a boat, like 478 00:27:06,480 --> 00:27:09,200 Speaker 1: in the in Sutury mccorma McCarthy, he lives on a boat. 479 00:27:09,240 --> 00:27:11,040 Speaker 1: And I was kind of attracted to that, and it 480 00:27:11,080 --> 00:27:13,000 Speaker 1: made me think back, like why do I have the 481 00:27:13,000 --> 00:27:15,520 Speaker 1: sort romantic idea about living on a boat that never 482 00:27:15,520 --> 00:27:18,920 Speaker 1: goes anywhere? And it's because of that the Highlander TV show, 483 00:27:19,520 --> 00:27:24,200 Speaker 1: Because in the Highlander TV show McLeod um whichever his 484 00:27:24,280 --> 00:27:25,840 Speaker 1: first name was in that show, because it was different, 485 00:27:26,119 --> 00:27:29,760 Speaker 1: Connor McCloud, Connel McCloud, I don't know, but he lived. 486 00:27:29,920 --> 00:27:32,720 Speaker 1: He lived on a boat that was was there in Paris, 487 00:27:32,760 --> 00:27:35,000 Speaker 1: I think, and so he was always coming, you know. 488 00:27:35,000 --> 00:27:38,320 Speaker 1: And he's just this brooding loner with a samurai swort 489 00:27:38,400 --> 00:27:40,119 Speaker 1: that lives on a boat in Paris. And I was like, 490 00:27:40,160 --> 00:27:42,879 Speaker 1: that looks like the life for me. Amsterdam another place 491 00:27:42,960 --> 00:27:45,880 Speaker 1: I would like to be boat bound. I wonder how 492 00:27:45,880 --> 00:27:48,400 Speaker 1: many of you guys have these boat fantasy too. Maybe 493 00:27:48,440 --> 00:27:50,400 Speaker 1: this is just particular to us. I know, I did 494 00:27:50,400 --> 00:27:52,399 Speaker 1: get to go down the Thames. My wife and I 495 00:27:52,840 --> 00:27:55,800 Speaker 1: um a friend of hers that she had she knew 496 00:27:55,840 --> 00:27:58,080 Speaker 1: over the internet when we traveled to London years ago, 497 00:27:58,359 --> 00:28:00,840 Speaker 1: and we he he had at a canal boat, and 498 00:28:00,880 --> 00:28:02,919 Speaker 1: so we got to go go down the Thames a 499 00:28:02,960 --> 00:28:05,360 Speaker 1: bit on that and that was delightful. And and when 500 00:28:05,400 --> 00:28:07,280 Speaker 1: we spent the night in it too, so I could 501 00:28:07,320 --> 00:28:09,000 Speaker 1: I could see where one would really fall in love 502 00:28:09,040 --> 00:28:11,600 Speaker 1: with it. Maybe not so much the chemical toilet, but 503 00:28:13,000 --> 00:28:15,520 Speaker 1: but the rest of it is fine. Well, thanks Trevor 504 00:28:15,560 --> 00:28:18,159 Speaker 1: for writing in. Well, if you guys would like to 505 00:28:18,200 --> 00:28:21,240 Speaker 1: share something with us, be it about epigenetics, be it 506 00:28:21,280 --> 00:28:26,000 Speaker 1: about chemical toilets on your romantic boat, or be it 507 00:28:26,080 --> 00:28:30,119 Speaker 1: about not Meg, we'd love to hear from you. You 508 00:28:30,160 --> 00:28:33,000 Speaker 1: can find us on Facebook, you can find us on Tumbler. 509 00:28:33,440 --> 00:28:35,119 Speaker 1: We are stuff to blow your mind on both of 510 00:28:35,119 --> 00:28:37,400 Speaker 1: those and uh and we also have a Twitter account 511 00:28:37,400 --> 00:28:39,760 Speaker 1: where we used to handle blow the Mind, and there's 512 00:28:39,760 --> 00:28:41,680 Speaker 1: something a little bit acrossover. We're going to promote the 513 00:28:41,680 --> 00:28:44,760 Speaker 1: show on all of those feeds. But then there's there's 514 00:28:44,760 --> 00:28:46,960 Speaker 1: always gonna be something on the Twitter that's not on 515 00:28:47,000 --> 00:28:49,040 Speaker 1: the Facebook. There's gonna be stuff on the Tumbler that's 516 00:28:49,080 --> 00:28:53,360 Speaker 1: not uh not used on the other website. So so 517 00:28:53,440 --> 00:28:55,080 Speaker 1: check them all out. There all pretty cool. Find the 518 00:28:55,080 --> 00:28:57,640 Speaker 1: one that fits your your frame of mind best. And 519 00:28:57,920 --> 00:29:00,360 Speaker 1: some people are more Twitter people, and then some people 520 00:29:00,400 --> 00:29:02,920 Speaker 1: were well one over by the flashiness of tumblers, so 521 00:29:03,720 --> 00:29:05,400 Speaker 1: you make a nice tumbler too. By the way, I 522 00:29:05,880 --> 00:29:08,480 Speaker 1: enjoyed the tumbler, I shouldn't really digging it, so yeah, 523 00:29:08,680 --> 00:29:11,440 Speaker 1: that's very cool. Um. You can also send us a 524 00:29:11,480 --> 00:29:14,800 Speaker 1: line by emailing us a blow the mind at discovery 525 00:29:14,920 --> 00:29:24,240 Speaker 1: dot com for more on this and thousands of other 526 00:29:24,280 --> 00:29:30,920 Speaker 1: topics because it how stuff works. Dot Com