1 00:00:06,160 --> 00:00:08,440 Speaker 1: Hey, you welcome to Stuff to Blow your Mind. My 2 00:00:08,560 --> 00:00:11,280 Speaker 1: name is Robert Lamb. Today is Saturday, so we have 3 00:00:11,440 --> 00:00:13,480 Speaker 1: a vault episode for you. This is going to be 4 00:00:13,880 --> 00:00:17,320 Speaker 1: Hair on Fire, Part one, which originally published seven eighteen, 5 00:00:17,720 --> 00:00:22,560 Speaker 1: twenty twenty four. There's a lot to talk about here, chemistry, mythology. 6 00:00:22,680 --> 00:00:25,479 Speaker 1: It's one of those episodes. So let's dive right in. 7 00:00:28,920 --> 00:00:32,680 Speaker 2: Welcome to Stuff to Blow Your Mind, production of iHeartRadio. 8 00:00:38,560 --> 00:00:40,720 Speaker 1: Hey you welcome to Stuff to Blow your Mind. My 9 00:00:40,840 --> 00:00:42,120 Speaker 1: name is Robert Lamb. 10 00:00:42,040 --> 00:00:45,400 Speaker 3: And I am Joe McCormick. And today on Stuff to 11 00:00:45,440 --> 00:00:49,360 Speaker 3: Blow Your Mind, I wanted to talk about burning hair. 12 00:00:49,640 --> 00:00:52,920 Speaker 3: That might be a kind of unusually niche or weird 13 00:00:53,320 --> 00:00:55,680 Speaker 3: thing to look into. But I was inspired to do 14 00:00:55,760 --> 00:00:57,840 Speaker 3: this a couple of weeks ago, on the fourth of 15 00:00:57,920 --> 00:01:01,880 Speaker 3: July actually, when I was making food for a for 16 00:01:01,880 --> 00:01:03,680 Speaker 3: a big family get together. You know, I was out 17 00:01:03,680 --> 00:01:07,120 Speaker 3: in the backyard grilling, and I did something I have 18 00:01:07,240 --> 00:01:10,760 Speaker 3: done many times before, which is burn all the hair 19 00:01:10,800 --> 00:01:13,959 Speaker 3: off part of my arm. Oh no, yeah, turn and look. 20 00:01:14,000 --> 00:01:17,600 Speaker 3: I mean like I wasn't like badly burned myself, like 21 00:01:17,640 --> 00:01:19,760 Speaker 3: on my skin. But you know, at some point I 22 00:01:20,080 --> 00:01:21,959 Speaker 3: look down and realized, like Oh, what are all these 23 00:01:21,959 --> 00:01:23,880 Speaker 3: weird little kind of pale curls? 24 00:01:24,200 --> 00:01:28,080 Speaker 1: Oh? I see, Okay, do you say you've done this before? 25 00:01:28,200 --> 00:01:30,360 Speaker 1: Do you at least alternate arms or is it just 26 00:01:30,400 --> 00:01:31,840 Speaker 1: always the same arm that it gets? 27 00:01:32,120 --> 00:01:34,400 Speaker 3: It's always my right arm, because that's the arm I'm 28 00:01:34,480 --> 00:01:37,360 Speaker 3: right handed doing that, you know, that's what I'm manipulating 29 00:01:37,400 --> 00:01:39,880 Speaker 3: the food with. You know. Sometimes it's more the hand, 30 00:01:40,080 --> 00:01:42,840 Speaker 3: like the I don't know if it's gross to talk 31 00:01:42,840 --> 00:01:45,480 Speaker 3: about your hand hair, like the hair on my knuckles, 32 00:01:45,520 --> 00:01:47,200 Speaker 3: the hair on my back, the back of my hand 33 00:01:47,720 --> 00:01:50,040 Speaker 3: that gets burned off. This time it was mainly along 34 00:01:50,120 --> 00:01:52,840 Speaker 3: like my forearm and the outside of my wrist. I 35 00:01:52,920 --> 00:01:56,600 Speaker 3: wonder if other grill operators have had similar experiences, because 36 00:01:56,640 --> 00:02:01,280 Speaker 3: I I never burn my hand or arm here when 37 00:02:01,280 --> 00:02:03,919 Speaker 3: I'm grilling a small amount of food, like a couple 38 00:02:03,960 --> 00:02:06,560 Speaker 3: of portions of whatever. It's always when I'm grilling for 39 00:02:06,640 --> 00:02:09,520 Speaker 3: a big crowd. So I guess it has something to 40 00:02:09,560 --> 00:02:12,320 Speaker 3: do with like trying to like fit a bunch of 41 00:02:12,320 --> 00:02:15,720 Speaker 3: different individual items on the grill and then go down 42 00:02:15,760 --> 00:02:17,959 Speaker 3: the line flipping them or moving them one at a time, 43 00:02:18,040 --> 00:02:21,120 Speaker 3: and something about that means like I'm holding my arm 44 00:02:21,240 --> 00:02:24,000 Speaker 3: directly over the hot part of the grill more or something. 45 00:02:24,639 --> 00:02:26,480 Speaker 1: Well that that would make sense, because I was thinking 46 00:02:26,480 --> 00:02:28,079 Speaker 1: about this as like, Okay, I don't know that I've 47 00:02:28,080 --> 00:02:32,040 Speaker 1: ever done this myself, but I think look back on 48 00:02:32,120 --> 00:02:34,320 Speaker 1: all on the grilling I have done over the years, 49 00:02:34,639 --> 00:02:38,840 Speaker 1: and it is generally just grilling for probably just for 50 00:02:38,919 --> 00:02:40,880 Speaker 1: my immediate family, So it's feeling just for like two 51 00:02:41,000 --> 00:02:43,639 Speaker 1: or three people. It's probably just going to be veggies 52 00:02:43,680 --> 00:02:47,200 Speaker 1: that aren't on there very long. And yeah, for I 53 00:02:47,200 --> 00:02:49,440 Speaker 1: guess a variety of reasons, and luck I have not 54 00:02:49,919 --> 00:02:53,200 Speaker 1: like burnt a lot of arm here on the grill, 55 00:02:53,280 --> 00:02:55,520 Speaker 1: but I have to, so I have to ask like 56 00:02:55,560 --> 00:02:58,360 Speaker 1: the follow up questions like what you mentioned what it 57 00:02:58,400 --> 00:03:01,120 Speaker 1: looked like, but that it was was that the primary 58 00:03:01,160 --> 00:03:03,040 Speaker 1: way that you realize something had happened or was there 59 00:03:03,120 --> 00:03:06,360 Speaker 1: also like a skin level sensation And was there a smell? Uh? 60 00:03:06,440 --> 00:03:09,760 Speaker 3: I mean, there's the feeling of heat obviously, which but 61 00:03:10,000 --> 00:03:12,240 Speaker 3: that's just naturally the air, because like I'm reaching over 62 00:03:12,280 --> 00:03:16,400 Speaker 3: a hot fire, I think there is a smell normal. 63 00:03:16,800 --> 00:03:19,480 Speaker 3: In fact, I would say that the smell is probably 64 00:03:19,560 --> 00:03:24,200 Speaker 3: the most characteristic and instantly recognizable sensory part of the 65 00:03:24,200 --> 00:03:27,640 Speaker 3: burning hair experience, right. I mean, almost anybody I think 66 00:03:28,280 --> 00:03:31,440 Speaker 3: can immediately think of the smell of burning hair. It 67 00:03:31,440 --> 00:03:34,600 Speaker 3: seems to stick in people's minds, even if hair burning 68 00:03:34,680 --> 00:03:37,160 Speaker 3: is like not something that happens very often to them. 69 00:03:37,200 --> 00:03:39,320 Speaker 3: It's just sort of I don't know, do you know 70 00:03:39,360 --> 00:03:41,040 Speaker 3: what I mean, Like it just sort of like sticks 71 00:03:41,080 --> 00:03:42,720 Speaker 3: in your memory. What that smells like? 72 00:03:43,120 --> 00:03:45,800 Speaker 1: Yeah, yeah, yeah, we'd be kind of wired, I guess, 73 00:03:45,840 --> 00:03:47,400 Speaker 1: to recognize. 74 00:03:46,880 --> 00:03:49,960 Speaker 3: It specifically in the context of grilling, though. There are 75 00:03:50,040 --> 00:03:51,920 Speaker 3: already a lot of volatiles in the air, there's a 76 00:03:51,960 --> 00:03:54,720 Speaker 3: lot of smoke, a lot of particles and everything. It's 77 00:03:54,720 --> 00:03:59,200 Speaker 3: an intense smell experience already, so I think the smell 78 00:03:59,200 --> 00:04:01,560 Speaker 3: of the burning hair, especially if there's only a little 79 00:04:01,560 --> 00:04:03,160 Speaker 3: bit of it, just kind of blends in more. You 80 00:04:03,240 --> 00:04:05,880 Speaker 3: might not notice that first. In this case, Yeah, I 81 00:04:05,880 --> 00:04:08,440 Speaker 3: remember just like looking down at my arm the part 82 00:04:08,520 --> 00:04:10,400 Speaker 3: that had been hot, and being like, oh, yeah, that 83 00:04:10,480 --> 00:04:11,040 Speaker 3: happened again. 84 00:04:11,800 --> 00:04:13,360 Speaker 1: Okay that yeah, that would make sense. There are a 85 00:04:13,400 --> 00:04:15,920 Speaker 1: lot of competing smells going on there. Yeah. 86 00:04:15,960 --> 00:04:20,200 Speaker 3: But anyway, this experience got me wondering about the science 87 00:04:20,320 --> 00:04:22,800 Speaker 3: of burning hair. I started to wonder, you know, some 88 00:04:23,160 --> 00:04:26,400 Speaker 3: questions about the basic science and chemistry involved here, like 89 00:04:26,760 --> 00:04:31,000 Speaker 3: how flammable is human hair and why does it smell 90 00:04:31,040 --> 00:04:34,359 Speaker 3: that way? And so forth. I was looking around for 91 00:04:34,720 --> 00:04:38,839 Speaker 3: good sources on the question of the sort of the 92 00:04:39,120 --> 00:04:44,440 Speaker 3: underlying chemistry of the smell of burning hair, and basically 93 00:04:44,640 --> 00:04:48,680 Speaker 3: the best sources I found pointed me to the presence 94 00:04:48,880 --> 00:04:52,800 Speaker 3: of sulfur. Of course, hair is mostly made of keratin, 95 00:04:52,880 --> 00:04:57,560 Speaker 3: which is primarily protein, and of course those proteins, when 96 00:04:57,600 --> 00:05:01,760 Speaker 3: they're burned, release their own sort of there are characteristic 97 00:05:01,800 --> 00:05:05,400 Speaker 3: protein burning smells that we might associate with the burning 98 00:05:05,440 --> 00:05:09,880 Speaker 3: of other types of skin and even fingernails and things 99 00:05:09,920 --> 00:05:13,880 Speaker 3: like that. But a big thing is the presence of sulfur. 100 00:05:13,920 --> 00:05:16,120 Speaker 3: According to a paper that I'm going to mention in 101 00:05:16,160 --> 00:05:22,120 Speaker 3: a little bit, human hair is approximately five percent sulfur, 102 00:05:22,760 --> 00:05:27,360 Speaker 3: and that sulfur content is largely responsible for the characteristic smell. 103 00:05:28,160 --> 00:05:31,600 Speaker 3: And this is interesting to me because it explains a similarity, 104 00:05:31,600 --> 00:05:35,279 Speaker 3: at least as far as I can remember. That burning hair, 105 00:05:35,440 --> 00:05:38,360 Speaker 3: to me, smells a little bit like lighting a match. 106 00:05:39,040 --> 00:05:43,160 Speaker 3: Lighting a match produces the distinctive smell of sulfur dioxide 107 00:05:43,240 --> 00:05:48,520 Speaker 3: or generally sulfur compounds, which happened because there is usually 108 00:05:48,600 --> 00:05:52,080 Speaker 3: sulfur content in a match head. It's part of what 109 00:05:52,200 --> 00:05:55,360 Speaker 3: burns to set the match alight. As a side note, 110 00:05:55,440 --> 00:05:59,920 Speaker 3: apparently it is kind of known that you can temporarily 111 00:06:00,400 --> 00:06:04,440 Speaker 3: mask other unpleasant smells. A commonly referenced one is the 112 00:06:04,480 --> 00:06:07,760 Speaker 3: smell of feces by striking a match. Have you ever 113 00:06:07,800 --> 00:06:08,440 Speaker 3: heard this before? 114 00:06:08,520 --> 00:06:10,600 Speaker 1: Rob, Oh, yeah, yeah, of course, you know. I mean 115 00:06:10,640 --> 00:06:15,719 Speaker 1: sometimes you even see that in at least residential bathrooms. 116 00:06:15,760 --> 00:06:19,520 Speaker 1: You know, there will be like some matches out by 117 00:06:19,560 --> 00:06:21,720 Speaker 1: the bathroom facilities, that sort of thing. 118 00:06:22,240 --> 00:06:24,400 Speaker 3: Oh, that's interesting. I don't know if I ever made 119 00:06:24,440 --> 00:06:26,520 Speaker 3: that connection, I would have assumed that if there were 120 00:06:26,560 --> 00:06:29,080 Speaker 3: matches out, they're usually paired with the candle, and the 121 00:06:29,160 --> 00:06:32,120 Speaker 3: idea is that you would use the matches to light 122 00:06:32,200 --> 00:06:35,120 Speaker 3: like a pleasantly scented candle. And I always understood that 123 00:06:35,160 --> 00:06:38,359 Speaker 3: as the ideas you would use a pleasantly scented candle 124 00:06:38,400 --> 00:06:41,440 Speaker 3: to mask the smell of feces in a bathroom or something. 125 00:06:41,760 --> 00:06:44,680 Speaker 1: I guess often but not always, I guess. And then 126 00:06:44,720 --> 00:06:47,560 Speaker 1: there is also like the kind of just a saying 127 00:06:47,680 --> 00:06:50,040 Speaker 1: right like, oh, there's a bad smell that may be 128 00:06:50,160 --> 00:06:53,640 Speaker 1: associated with digestion. Someone will be like, oh, somebody light 129 00:06:53,720 --> 00:06:54,400 Speaker 1: a match, you know. 130 00:06:55,120 --> 00:06:58,159 Speaker 3: Oh okay, well, I may have misunderstood those sayings as well. 131 00:06:58,200 --> 00:07:01,680 Speaker 3: I probably would interpret that as like, I don't know, 132 00:07:01,720 --> 00:07:04,120 Speaker 3: what's the polite way of putting it, lighting afart kind 133 00:07:04,160 --> 00:07:04,680 Speaker 3: of comment. 134 00:07:05,040 --> 00:07:08,599 Speaker 1: Well, I don't Well, I'm not sure that that was 135 00:07:08,600 --> 00:07:10,760 Speaker 1: the level of excitement, Like it's a bad smell in here, 136 00:07:10,800 --> 00:07:12,960 Speaker 1: let's see if it can busts. It's more like there's 137 00:07:13,000 --> 00:07:15,480 Speaker 1: an unpleasant odor. Let us light a match so that 138 00:07:15,560 --> 00:07:19,840 Speaker 1: the smell of that struck match might mask the stink 139 00:07:19,840 --> 00:07:20,800 Speaker 1: that has enveloped us. 140 00:07:21,040 --> 00:07:23,640 Speaker 3: Yeah, okay, Well, so now I'm understanding several things about 141 00:07:23,640 --> 00:07:27,560 Speaker 3: the world differently than I did before this conversation. But anyway, 142 00:07:27,720 --> 00:07:29,440 Speaker 3: so it makes me think about I see like a 143 00:07:29,480 --> 00:07:31,880 Speaker 3: candle in the bathroom and some matches. Maybe I'm thinking 144 00:07:32,000 --> 00:07:35,640 Speaker 3: about the mechanism differently. It's actually the lighting of the 145 00:07:35,680 --> 00:07:39,000 Speaker 3: match more so than the candle that helps, sort of 146 00:07:39,080 --> 00:07:42,040 Speaker 3: like calm your mind about the smells in there. But anyway, 147 00:07:42,120 --> 00:07:45,560 Speaker 3: the idea is that the sulfur compounds released by striking 148 00:07:45,600 --> 00:07:51,080 Speaker 3: a match overpower other smells in our olfactory recognition. I 149 00:07:51,120 --> 00:07:53,560 Speaker 3: have seen it written in a couple of places that 150 00:07:53,640 --> 00:07:55,640 Speaker 3: the idea is when you strike a match, like it 151 00:07:55,800 --> 00:07:59,480 Speaker 3: burns up the bad gases responsible for causing the smell 152 00:07:59,520 --> 00:08:01,120 Speaker 3: in the air. That does not seem to be true. 153 00:08:01,160 --> 00:08:03,960 Speaker 3: It's more kind of like your your nose and your 154 00:08:04,000 --> 00:08:07,120 Speaker 3: brain are primed to just let the smell of the 155 00:08:07,120 --> 00:08:09,680 Speaker 3: struck match. I think this will be primarily the smell 156 00:08:09,720 --> 00:08:13,640 Speaker 3: of sulfur dioxide. It just take over your smell sensing abilities. 157 00:08:14,520 --> 00:08:16,600 Speaker 3: But it makes me wonder if the burning of hair 158 00:08:16,720 --> 00:08:19,640 Speaker 3: also releases these sulfur compounds that are responsible for the 159 00:08:19,720 --> 00:08:24,720 Speaker 3: characteristic smell, if you could likewise cover up the you know, 160 00:08:24,760 --> 00:08:27,920 Speaker 3: these unpleasant body body aromas, fecal smells and stuff by 161 00:08:27,960 --> 00:08:28,520 Speaker 3: burning hair. 162 00:08:29,520 --> 00:08:35,360 Speaker 1: Well we're not advising that, no, no, but but just 163 00:08:35,760 --> 00:08:48,440 Speaker 1: from like a chemical standpoint, okay, perhaps so. 164 00:08:48,880 --> 00:08:52,079 Speaker 3: One of the most surprising and interesting things I discovered 165 00:08:52,160 --> 00:08:56,199 Speaker 3: by looking into these questions about about the science of 166 00:08:56,240 --> 00:08:58,680 Speaker 3: burning hair was that some of the best research I 167 00:08:58,679 --> 00:09:02,560 Speaker 3: could find on this came from studies about hair catching 168 00:09:02,600 --> 00:09:04,520 Speaker 3: on fire in spaceships. 169 00:09:05,679 --> 00:09:08,200 Speaker 1: Yeah yeah, attack ships on fire off the shoulder of. 170 00:09:08,200 --> 00:09:11,360 Speaker 3: Orion, right, yeah. Yeah. So the main paper I was 171 00:09:11,360 --> 00:09:14,480 Speaker 3: looking at is called the Flammability of Human Hair in 172 00:09:14,559 --> 00:09:17,920 Speaker 3: Exploration atmospheres from the year two thousand and nine in 173 00:09:18,000 --> 00:09:23,480 Speaker 3: the SAE Journal International Journal of Aerospace by Sandra L. Olson, 174 00:09:23,640 --> 00:09:27,080 Speaker 3: Devon W. Griffin, David L. Urban, Gary A. Ruff, and 175 00:09:27,120 --> 00:09:32,920 Speaker 3: Elizabeth A. Smith. And so the authors here begin by 176 00:09:33,000 --> 00:09:35,400 Speaker 3: referencing an older study that I'll mention in a second 177 00:09:35,640 --> 00:09:39,760 Speaker 3: that says, the flammability of both skin and hair has 178 00:09:39,800 --> 00:09:44,120 Speaker 3: actually been a subject of major concern since the early 179 00:09:44,200 --> 00:09:47,760 Speaker 3: stages of the US base program. And they refer back 180 00:09:47,800 --> 00:09:51,679 Speaker 3: to an older paper, one from nineteen sixty eight by 181 00:09:51,760 --> 00:09:55,840 Speaker 3: Robert L. Durfey, called the Flammability of Skin and Hair 182 00:09:55,880 --> 00:10:00,360 Speaker 3: in Oxygen Enriched Atmospheres. This was published in in the 183 00:10:01,000 --> 00:10:05,280 Speaker 3: Or as part of a USAF School of Aerospace Medicine 184 00:10:05,320 --> 00:10:10,080 Speaker 3: technical report. This was from December nineteen sixty eight, and 185 00:10:10,400 --> 00:10:13,839 Speaker 3: durfy begins this study from sixty eight by saying, quote, 186 00:10:13,880 --> 00:10:18,599 Speaker 3: observations after recent fires involving human subjects in oxygen atmospheres 187 00:10:19,080 --> 00:10:22,280 Speaker 3: indicate that the humans may have contributed to the spread 188 00:10:22,280 --> 00:10:26,160 Speaker 3: of fires through combustion of their skin and hair. So 189 00:10:26,320 --> 00:10:29,800 Speaker 3: obviously that's quite morbid. But I was wondering what this 190 00:10:29,880 --> 00:10:33,800 Speaker 3: refers to, and I figured that since this was published 191 00:10:33,800 --> 00:10:36,520 Speaker 3: in nineteen sixty eight. I think it almost certainly must 192 00:10:36,559 --> 00:10:39,240 Speaker 3: be referring, at least in part to the tragedy of 193 00:10:39,280 --> 00:10:42,720 Speaker 3: the Apollo one fire, which killed three astronauts on January 194 00:10:42,720 --> 00:10:46,720 Speaker 3: twenty seventh, nineteen sixty seven. Those astronauts were Gus Grissom, 195 00:10:46,960 --> 00:10:50,080 Speaker 3: Ed White and Roger B. Chaffey, and they died during 196 00:10:50,120 --> 00:10:52,280 Speaker 3: a launch test that was less than a month before 197 00:10:52,320 --> 00:10:54,880 Speaker 3: the scheduled mission, so they weren't actually in space. It 198 00:10:54,920 --> 00:10:58,200 Speaker 3: was a ground test on Earth before the launch of 199 00:10:58,240 --> 00:11:02,680 Speaker 3: an orbital mission. And the tragedy was that a flash 200 00:11:02,720 --> 00:11:06,240 Speaker 3: fire broke out inside the cabin of the command module. 201 00:11:06,720 --> 00:11:10,040 Speaker 3: The fire probably started with There could have been several 202 00:11:10,080 --> 00:11:12,400 Speaker 3: ignition points, but it may have been an electrical arc 203 00:11:12,520 --> 00:11:17,120 Speaker 3: from faulty wiring, maybe connected to some kind of chemical present, 204 00:11:17,440 --> 00:11:21,240 Speaker 3: like a volume of anti freeze fluid called glycol. But 205 00:11:21,320 --> 00:11:25,080 Speaker 3: however it started, it spread very rapidly due to the 206 00:11:25,240 --> 00:11:29,199 Speaker 3: enriched oxygen atmosphere pressurized inside the cabin. It was basically 207 00:11:29,240 --> 00:11:32,440 Speaker 3: pure oxygen in there, and due to a variety of 208 00:11:32,480 --> 00:11:36,240 Speaker 3: combustible materials spread throughout the cabin interior. Now, remember, as 209 00:11:36,280 --> 00:11:38,600 Speaker 3: we've talked about on the show before, fire needs three 210 00:11:38,600 --> 00:11:41,600 Speaker 3: things to burn, it needs heat, it needs fuel, and 211 00:11:41,640 --> 00:11:45,280 Speaker 3: it needs oxygen. Obviously, in this scenario there could have 212 00:11:45,280 --> 00:11:48,199 Speaker 3: been an initial heat source, some kind of ignition point. 213 00:11:48,640 --> 00:11:51,120 Speaker 3: There would have been lots of oxygen because it was 214 00:11:51,160 --> 00:11:55,800 Speaker 3: a pure oxygen atmosphere inside the command module. And so 215 00:11:55,840 --> 00:11:58,520 Speaker 3: the question is what was the fuel and what was 216 00:11:58,559 --> 00:12:02,280 Speaker 3: the fuel roll of very substances, including parts of human 217 00:12:02,280 --> 00:12:06,000 Speaker 3: bodies inside the command module. And so this study was 218 00:12:06,040 --> 00:12:09,160 Speaker 3: looking into human hair and skin, and so one thing 219 00:12:09,200 --> 00:12:12,360 Speaker 3: it says that is that taken as a whole, even 220 00:12:12,640 --> 00:12:18,520 Speaker 3: with enriched oxygen around, human skin is not especially flammable 221 00:12:19,160 --> 00:12:21,120 Speaker 3: because it has a lot of water in it, right, 222 00:12:21,200 --> 00:12:25,079 Speaker 3: So there is a major heat sink in human bodies 223 00:12:25,600 --> 00:12:29,240 Speaker 3: where heat has to be continually applied from the outside 224 00:12:29,280 --> 00:12:31,040 Speaker 3: in order for it to burn. There's a lot of water. 225 00:12:31,120 --> 00:12:33,480 Speaker 3: That water must be turned into water vapor, so it 226 00:12:33,480 --> 00:12:38,240 Speaker 3: doesn't catch fire easily. However, there are sort of little 227 00:12:38,400 --> 00:12:42,320 Speaker 3: layers on the outside of skin and also hair, which 228 00:12:42,400 --> 00:12:46,520 Speaker 3: can catch fire in enriched oxygen environments much more easily. 229 00:12:47,000 --> 00:12:50,240 Speaker 3: This study from sixty eight found that a high concentration 230 00:12:50,360 --> 00:12:53,320 Speaker 3: of inert helium in the air in an environment, in 231 00:12:53,320 --> 00:12:56,640 Speaker 3: this case seventy five percent helium would prevent hair from 232 00:12:56,679 --> 00:13:00,720 Speaker 3: burning at regular atmospheric pressure. And the study also tested 233 00:13:00,760 --> 00:13:03,560 Speaker 3: various protective measures such as smearing the skin and hair 234 00:13:03,640 --> 00:13:07,800 Speaker 3: with protective lotions and greases and covering it with flame 235 00:13:07,840 --> 00:13:08,720 Speaker 3: repellent cloth. 236 00:13:09,400 --> 00:13:12,600 Speaker 1: Was just shaving off all the hair just not an option? 237 00:13:13,360 --> 00:13:15,160 Speaker 1: Seems like if I got to choose between the two 238 00:13:15,280 --> 00:13:17,280 Speaker 1: for my space mission, I would just say, well, can 239 00:13:17,360 --> 00:13:19,040 Speaker 1: we just buzz it all off? 240 00:13:19,400 --> 00:13:21,120 Speaker 3: That is an option that is discussed in the two 241 00:13:21,120 --> 00:13:23,280 Speaker 3: thousand and nine paper, which I'll come back to now. 242 00:13:23,360 --> 00:13:27,360 Speaker 3: So yeah, So initially they cite the Durfy study and 243 00:13:28,120 --> 00:13:32,120 Speaker 3: they say, as a general matter, there are several factors 244 00:13:32,160 --> 00:13:35,280 Speaker 3: to consider that could increase the risk of fires within 245 00:13:35,400 --> 00:13:39,760 Speaker 3: spacecraft or space exploration testing environments. And a big one 246 00:13:39,760 --> 00:13:41,520 Speaker 3: they call out is the same thing we were just 247 00:13:41,520 --> 00:13:46,720 Speaker 3: talking about, elevated oxygen levels. So in some cases ambient 248 00:13:46,760 --> 00:13:50,840 Speaker 3: within spacecraft, but also in cases where supplemental oxygen is 249 00:13:50,880 --> 00:13:54,360 Speaker 3: being provided through a mask. Now, when would there be 250 00:13:54,440 --> 00:13:58,480 Speaker 3: supplemental oxygen inside a spacecraft? You could say possibly in 251 00:13:58,520 --> 00:14:01,480 Speaker 3: a medical intervention for ill or injured crew member. They 252 00:14:01,559 --> 00:14:05,040 Speaker 3: might have extra oxygen supplied to them. This is common 253 00:14:05,240 --> 00:14:09,040 Speaker 3: in hospitals on Earth as well, or possibly during emergencies 254 00:14:09,080 --> 00:14:12,360 Speaker 3: such as the leak of toxic chemicals or in fighting 255 00:14:12,440 --> 00:14:15,840 Speaker 3: a pre existing fire. Now, the authors point out something 256 00:14:15,880 --> 00:14:19,080 Speaker 3: interesting about the case of breathing pure oxygen through a mask. 257 00:14:19,680 --> 00:14:23,640 Speaker 3: They say, quote, for every breath of pure oxygen breathed in, 258 00:14:23,880 --> 00:14:29,280 Speaker 3: the exhaled breath still contains ninety five percent of the oxygen. 259 00:14:29,720 --> 00:14:33,560 Speaker 3: This creates an environment of increased oxygen near the head 260 00:14:33,640 --> 00:14:37,040 Speaker 3: and chest. Now, I did not know that, and don't 261 00:14:37,080 --> 00:14:39,200 Speaker 3: think I would have thought about that before, but from 262 00:14:39,240 --> 00:14:41,880 Speaker 3: what I looked up in other sources, yes, this seems right. 263 00:14:42,000 --> 00:14:45,880 Speaker 3: In breathing say normal air on Earth, which is roughly 264 00:14:46,120 --> 00:14:50,320 Speaker 3: twenty one percent oxygen and the rest is mostly nitrogen. 265 00:14:51,120 --> 00:14:53,560 Speaker 3: In rough terms, that air on Earth. You know, if 266 00:14:53,600 --> 00:14:57,920 Speaker 3: you say twenty percent is oxygen, about fifteen percent of 267 00:14:57,960 --> 00:15:00,960 Speaker 3: the air you breathe out is oc oxygen. So what 268 00:15:01,040 --> 00:15:04,000 Speaker 3: happened to that missing five percent of the air? Well, 269 00:15:04,240 --> 00:15:07,440 Speaker 3: about five percent of the air is oxygen that is 270 00:15:07,480 --> 00:15:10,080 Speaker 3: absorbed by the lungs. So when you breathe in, you 271 00:15:10,120 --> 00:15:13,000 Speaker 3: absorb about five percent of the air, about a quarter 272 00:15:13,080 --> 00:15:15,640 Speaker 3: of the total oxygen content of the air. And then 273 00:15:15,680 --> 00:15:18,800 Speaker 3: that oxygen is replaced mostly with carbon dioxide when you 274 00:15:18,800 --> 00:15:21,920 Speaker 3: breathe out, so that leaves you with what the author said, 275 00:15:21,960 --> 00:15:24,520 Speaker 3: if you're breathing pure oxygen, say through a mask, in 276 00:15:24,560 --> 00:15:27,400 Speaker 3: one of these scenarios, what you breathe out would be 277 00:15:27,520 --> 00:15:30,760 Speaker 3: roughly ninety five percent oxygen, So the area around your 278 00:15:30,800 --> 00:15:32,720 Speaker 3: head as you're exhaling is going to have a lot 279 00:15:32,760 --> 00:15:36,880 Speaker 3: more oxygen in it than it normally would. Now note, 280 00:15:36,920 --> 00:15:41,160 Speaker 3: with regard to ambient oxygen, the oxygen levels used in 281 00:15:41,240 --> 00:15:46,080 Speaker 3: like different space exploration and environments have varied. The International 282 00:15:46,080 --> 00:15:51,120 Speaker 3: Space Station actually maintains roughly the Earth's atmosphere mixture of 283 00:15:51,200 --> 00:15:54,320 Speaker 3: gases in the air, so about twenty one percent oxygen. 284 00:15:54,360 --> 00:15:58,400 Speaker 3: The rest is nitrogen, but the nitrogen has to be 285 00:15:58,960 --> 00:16:02,640 Speaker 3: supplied through through like bringing up tanks of nitrogen to 286 00:16:03,080 --> 00:16:06,720 Speaker 3: make up that difference. So that and other considerations have 287 00:16:08,240 --> 00:16:10,520 Speaker 3: led people to plan that in some other cases there 288 00:16:10,600 --> 00:16:14,320 Speaker 3: might be higher levels of oxygen in the atmosphere breathed 289 00:16:14,400 --> 00:16:18,560 Speaker 3: within space exploration contexts in the future. The authors cite 290 00:16:18,760 --> 00:16:21,440 Speaker 3: a few other examples. They cite past examples as well. 291 00:16:21,480 --> 00:16:24,160 Speaker 3: They say the Apollo missions and sky Lab used higher 292 00:16:24,240 --> 00:16:28,080 Speaker 3: oxygen levels, and as of the time of this paper, 293 00:16:28,120 --> 00:16:30,320 Speaker 3: there were plans for other missions that the authors say 294 00:16:30,360 --> 00:16:34,520 Speaker 3: would have used higher oxygen concentrations. They cite the Orion 295 00:16:34,640 --> 00:16:39,840 Speaker 3: Crew exploration vehicle. They cite the Altai Lander, which would 296 00:16:39,880 --> 00:16:42,400 Speaker 3: have been at the time this mission was planned, would 297 00:16:42,400 --> 00:16:45,560 Speaker 3: have been a landing vehicle for a US mission returning 298 00:16:45,600 --> 00:16:48,240 Speaker 3: to the Moon. And they also talk about higher oxygen 299 00:16:48,320 --> 00:16:52,200 Speaker 3: concentrations in possible lunar surface habitats. So there would be 300 00:16:52,680 --> 00:16:57,360 Speaker 3: numerous scenarios where you're in a space exploration context and 301 00:16:57,400 --> 00:17:00,960 Speaker 3: you would have increased oxygen levels. Either there's just ambiently 302 00:17:01,000 --> 00:17:04,280 Speaker 3: increased oxygen in the particular mission or vehicle you're talking about, 303 00:17:04,720 --> 00:17:07,239 Speaker 3: or you might be needing to give somebody oxygen for 304 00:17:07,280 --> 00:17:09,720 Speaker 3: some reason, in which case there would be in much 305 00:17:09,760 --> 00:17:13,920 Speaker 3: increased oxygen around their head and chest. The authors also 306 00:17:14,000 --> 00:17:19,080 Speaker 3: point out that certain medical interventions could provide ignition points, 307 00:17:19,119 --> 00:17:22,840 Speaker 3: such as you could potentially start a fire during defibrillation, 308 00:17:23,800 --> 00:17:27,040 Speaker 3: and this could happen even on Earth, And I was like, really, yes, 309 00:17:27,160 --> 00:17:29,760 Speaker 3: I went and read about this. It seems to put 310 00:17:29,840 --> 00:17:32,679 Speaker 3: some fears at rest. It is very rare. This is 311 00:17:32,720 --> 00:17:36,240 Speaker 3: not something that commonly happens, but there have been reported cases. 312 00:17:36,880 --> 00:17:39,960 Speaker 3: For example, the following study. I was looking at a 313 00:17:40,000 --> 00:17:42,919 Speaker 3: study published in the Journal of the American College of 314 00:17:42,920 --> 00:17:46,680 Speaker 3: Cardiology by Sanchez at All from the year twenty twenty three. 315 00:17:47,680 --> 00:17:49,760 Speaker 3: It talks about a case where a seventy two year 316 00:17:49,800 --> 00:17:53,200 Speaker 3: old male showed up at the emergency room. He was 317 00:17:53,240 --> 00:17:59,119 Speaker 3: suffering atrial fibrillation, an erratic elevated heart rate, and there 318 00:17:59,119 --> 00:18:02,399 Speaker 3: were several interventions, including the use of a defibrillator to 319 00:18:02,560 --> 00:18:05,879 Speaker 3: stabilize the regular heartbeat. So they put the leads on 320 00:18:05,920 --> 00:18:08,760 Speaker 3: your chest and they send a charge to try to 321 00:18:09,320 --> 00:18:12,719 Speaker 3: synchronize the muscles of the heart. The report says, quote, 322 00:18:13,040 --> 00:18:18,200 Speaker 3: the defibrillator pads ignited in flames after the defibrillation button 323 00:18:18,320 --> 00:18:21,600 Speaker 3: was pressed. The betting and oxygen mask also caught fire. 324 00:18:21,920 --> 00:18:24,600 Speaker 3: Now that's something you don't usually think of happening. However, 325 00:18:24,720 --> 00:18:27,520 Speaker 3: the authors stressed that this is extremely rare. They say 326 00:18:27,520 --> 00:18:30,119 Speaker 3: there are only two known cases in the medical literature 327 00:18:30,240 --> 00:18:33,840 Speaker 3: that they could identify. And also fortunately the patient did 328 00:18:33,840 --> 00:18:38,600 Speaker 3: not suffer actually suffer burn injuries. What was burned appeared 329 00:18:38,600 --> 00:18:41,760 Speaker 3: to be the pads and the patient's body hair in 330 00:18:41,800 --> 00:18:44,360 Speaker 3: some parts of the betting. But they say to avoid 331 00:18:44,359 --> 00:18:47,359 Speaker 3: this happening. There are several steps you can do. Of course, 332 00:18:47,400 --> 00:18:51,640 Speaker 3: the increased oxygen from supplemental oxygen probably contributed here. So 333 00:18:51,680 --> 00:18:56,240 Speaker 3: they say you can remove or place oxygen masks or 334 00:18:56,359 --> 00:18:59,320 Speaker 3: nasal canul of further away from the patient's chest when 335 00:18:59,359 --> 00:19:03,040 Speaker 3: you're doing a defibrillation charge. They say that you can 336 00:19:03,560 --> 00:19:07,280 Speaker 3: prepare the pads better, make sure that they have complete 337 00:19:07,720 --> 00:19:11,440 Speaker 3: attachment to the chest wall. They say chest hair should 338 00:19:11,480 --> 00:19:14,720 Speaker 3: be trimmed ideally, that that helps, and they also say 339 00:19:14,760 --> 00:19:19,240 Speaker 3: avoid alcohol products during the preparation for the defib anyway, 340 00:19:19,359 --> 00:19:22,560 Speaker 3: so that was sort of a tangent. But defibrillation is 341 00:19:22,680 --> 00:19:25,040 Speaker 3: one of the scenarios the author is mentioned that could 342 00:19:25,080 --> 00:19:29,720 Speaker 3: possibly provide an ignition point in space. But coming back 343 00:19:29,720 --> 00:19:32,480 Speaker 3: to the burning hair in space study, the authors also 344 00:19:32,520 --> 00:19:36,960 Speaker 3: mentioned cauterization as a medical procedure that could provide increased 345 00:19:37,080 --> 00:19:41,399 Speaker 3: risk of fire in an oxygen enriched environment. So you 346 00:19:41,480 --> 00:19:45,119 Speaker 3: pair the oxygen ch atmosphere in some spacecraft and space 347 00:19:45,160 --> 00:19:49,280 Speaker 3: exploration environments with various ignitionen scenarios and you've got the 348 00:19:49,280 --> 00:19:52,719 Speaker 3: heat and the oxygen. So the third ingredient is fuel. 349 00:19:53,000 --> 00:19:55,840 Speaker 3: And here the authors point to the presence of potentially 350 00:19:55,880 --> 00:20:00,800 Speaker 3: flammable clothing and hair. Now, in addition to the medical 351 00:20:00,800 --> 00:20:05,240 Speaker 3: ignition scenarios mentioned above, like defibrillation and cauterization, the author 352 00:20:05,280 --> 00:20:09,120 Speaker 3: is note the conclusion of previous research, especially regarding Apollo one, 353 00:20:09,560 --> 00:20:14,679 Speaker 3: that it should basically be considered impossible to eliminate all 354 00:20:14,880 --> 00:20:18,800 Speaker 3: ignition sources in a spacecraft environment. You're always going to 355 00:20:18,920 --> 00:20:23,439 Speaker 3: have things that could generate sparks or electrical arcs or 356 00:20:23,480 --> 00:20:27,480 Speaker 3: hot surfaces. So the best way to limit the risk 357 00:20:27,560 --> 00:20:31,680 Speaker 3: of fire is to control access of those ignition sources 358 00:20:31,720 --> 00:20:36,280 Speaker 3: to fuel by removing combustible materials or making them less combustible. 359 00:20:36,880 --> 00:20:40,480 Speaker 1: You know, I've been watching enough alien movies recently to 360 00:20:41,240 --> 00:20:43,879 Speaker 1: of course know that standard issue. If you're going on 361 00:20:43,920 --> 00:20:46,280 Speaker 1: a space mission, you have a flamethrower on board, you 362 00:20:46,280 --> 00:20:48,520 Speaker 1: have or at least a flame or unit. I don't 363 00:20:48,520 --> 00:20:51,280 Speaker 1: think it's it's necessary. It's not nothing that's supposed to 364 00:20:51,280 --> 00:20:53,600 Speaker 1: be like spitting jelly gasoline or anything like that, Like 365 00:20:53,640 --> 00:20:56,679 Speaker 1: not a military flamethrower, but still a unit that shoots 366 00:20:56,680 --> 00:20:59,040 Speaker 1: a big plume of fire at things. 367 00:21:00,119 --> 00:21:02,520 Speaker 3: Do they have that, that's a good question. Is there 368 00:21:02,520 --> 00:21:05,520 Speaker 3: an industrial use or do they make them? Maybe they 369 00:21:05,560 --> 00:21:06,440 Speaker 3: make them now that. 370 00:21:06,400 --> 00:21:09,200 Speaker 1: I I think sometimes that's the case, But I don't 371 00:21:09,200 --> 00:21:11,960 Speaker 1: know the best I could do putting this together, watching 372 00:21:12,000 --> 00:21:14,080 Speaker 1: the films in the back of my mind, always thinking 373 00:21:14,160 --> 00:21:17,040 Speaker 1: like flame is probably not a great idea in an enclosed, 374 00:21:17,080 --> 00:21:19,880 Speaker 1: sealed environment without even factoring in and all the stuff 375 00:21:19,880 --> 00:21:23,600 Speaker 1: we've been talking about here. But I'm guessing you could 376 00:21:23,680 --> 00:21:26,479 Speaker 1: make a case for Okay, if you are dealing with 377 00:21:26,520 --> 00:21:30,760 Speaker 1: some sort of a life form situa biological threat, like 378 00:21:30,800 --> 00:21:33,280 Speaker 1: some sort of a bug, not a full blown xenomorph, 379 00:21:33,400 --> 00:21:36,800 Speaker 1: you know, but just kind of whatever is expected to occur, 380 00:21:36,920 --> 00:21:38,520 Speaker 1: then I guess you can make a case for a 381 00:21:38,520 --> 00:21:41,920 Speaker 1: flame unit. And then on top of that, if you're 382 00:21:41,960 --> 00:21:45,399 Speaker 1: looking at some sort of a potential like boarding scenario, 383 00:21:45,720 --> 00:21:47,880 Speaker 1: like a boarding action, like people coming on your ship. 384 00:21:47,880 --> 00:21:50,080 Speaker 1: They aren't supposed to be there and you want to 385 00:21:51,480 --> 00:21:55,359 Speaker 1: encourage them to leave or to back off. I guess 386 00:21:55,359 --> 00:21:57,480 Speaker 1: a flame unit you could make some sort of a 387 00:21:57,480 --> 00:21:59,680 Speaker 1: case that a flame unit is better than a gun 388 00:22:00,080 --> 00:22:03,000 Speaker 1: could potentially puncture the whole. But I don't know. Okay, 389 00:22:03,840 --> 00:22:05,840 Speaker 1: once you factor all this in, though, is the risk 390 00:22:05,880 --> 00:22:07,520 Speaker 1: of fire greater. I don't know. 391 00:22:08,040 --> 00:22:10,080 Speaker 3: I think we'll have to assume that, like the Nostromo 392 00:22:10,280 --> 00:22:14,600 Speaker 3: and other alien environments just use they're more like the ISS, 393 00:22:14,680 --> 00:22:18,160 Speaker 3: like they supply the nitrogen, they have a more earth 394 00:22:18,320 --> 00:22:22,440 Speaker 3: like atmosphere rather than the oxygen enriched atmospheres that would 395 00:22:22,480 --> 00:22:24,160 Speaker 3: increase the risk of using flames. 396 00:22:24,320 --> 00:22:26,520 Speaker 1: Sure, Plus everything's a little bit wet on the Nostromo, 397 00:22:26,640 --> 00:22:28,840 Speaker 1: so maybe that helps now. 398 00:22:28,880 --> 00:22:31,840 Speaker 3: The authors of this paper note that a lot of 399 00:22:31,840 --> 00:22:35,879 Speaker 3: individual mission durations are short enough that astronauts don't need 400 00:22:35,920 --> 00:22:38,160 Speaker 3: to cut their hair in space, but even that does 401 00:22:38,240 --> 00:22:41,919 Speaker 3: happen sometimes. The space haircuts are real. They include a 402 00:22:41,960 --> 00:22:45,199 Speaker 3: photo from the ISS of a space haircut where Russian 403 00:22:45,200 --> 00:22:49,160 Speaker 3: cosmonaut Valerie Corzun is doing a haircut for the American 404 00:22:49,200 --> 00:22:51,680 Speaker 3: astronaut Peggy Whitson in the year two thousand and two. 405 00:22:52,080 --> 00:22:54,000 Speaker 3: And you can see like he's got the scissors and 406 00:22:54,040 --> 00:22:56,639 Speaker 3: a comb in his hands, and she's holding a like 407 00:22:56,680 --> 00:22:59,320 Speaker 3: a hose up by her head. It's a vacuum cleaner hose. 408 00:22:59,520 --> 00:23:01,480 Speaker 3: And I guess that's to suck in all the clippings 409 00:23:01,520 --> 00:23:04,400 Speaker 3: right as their release, because man, you think hair gets 410 00:23:04,400 --> 00:23:07,840 Speaker 3: everywhere during a normal Earth haircut with regular gravity, you know, 411 00:23:08,040 --> 00:23:10,560 Speaker 3: I feel like I get a haircut and days later 412 00:23:10,600 --> 00:23:12,840 Speaker 3: I'm still finding hair. It's like I'm not even wearing 413 00:23:12,880 --> 00:23:16,920 Speaker 3: the same clothes. What's going on? But yeah, so in 414 00:23:17,440 --> 00:23:19,760 Speaker 3: microgravity you could imagine it's a real headache. 415 00:23:20,040 --> 00:23:21,600 Speaker 1: Yeah, I feel like you got to make a strong 416 00:23:21,680 --> 00:23:24,480 Speaker 1: case for that haircut and or be really good with 417 00:23:24,520 --> 00:23:25,320 Speaker 1: that vacuum huze. 418 00:23:25,920 --> 00:23:28,600 Speaker 3: But anyway, given all these considerations, it's important to know 419 00:23:28,760 --> 00:23:33,080 Speaker 3: for planning future space missions in these abnormal atmospheric and 420 00:23:33,080 --> 00:23:37,280 Speaker 3: gravity conditions, and especially in more unique scenarios where you 421 00:23:37,320 --> 00:23:41,400 Speaker 3: would need to supply somebody with supplemental oxygen, how flammable 422 00:23:41,480 --> 00:23:44,240 Speaker 3: are the fuel sources you would find inside a spaceship. 423 00:23:44,320 --> 00:23:46,600 Speaker 3: And in the case of this study, they looked into 424 00:23:46,680 --> 00:23:51,000 Speaker 3: how flammable is human hair with these increased concentrations of oxygen. 425 00:23:51,800 --> 00:23:54,680 Speaker 3: So the authors did some experiments. They tried to stimulate 426 00:23:54,800 --> 00:23:58,479 Speaker 3: what it's like in various space exploration environments using an 427 00:23:58,480 --> 00:24:01,960 Speaker 3: apparatus called a low speed flow tunnel, where you maintain 428 00:24:02,200 --> 00:24:06,080 Speaker 3: a forced flow of a controlled gas mixture. In this case, 429 00:24:06,119 --> 00:24:10,119 Speaker 3: it was mounted inside of a NASA Zero Gravity Research 430 00:24:10,160 --> 00:24:13,800 Speaker 3: Facility drop rig, so that was to simulate different gravity conditions. 431 00:24:14,400 --> 00:24:17,160 Speaker 3: They tried a few different lengths and styles of human hair, 432 00:24:17,520 --> 00:24:20,639 Speaker 3: they mounted them on a rack and they said that 433 00:24:20,800 --> 00:24:23,800 Speaker 3: basically the flame spread was pretty similar for the different 434 00:24:23,840 --> 00:24:28,960 Speaker 3: hairstyles tested different lengths. The spread was sort of quick 435 00:24:29,040 --> 00:24:31,879 Speaker 3: at first over the sort of frizzy outer layer of 436 00:24:31,920 --> 00:24:35,639 Speaker 3: the surface of a hair mass, and then would be followed, 437 00:24:35,720 --> 00:24:38,920 Speaker 3: especially in the cases of longer hair where there's a 438 00:24:38,960 --> 00:24:43,160 Speaker 3: lot of hair, followed by quote continued bulk burning. And 439 00:24:43,280 --> 00:24:46,080 Speaker 3: they found that, oh yeah, it is absolutely right that 440 00:24:46,240 --> 00:24:51,080 Speaker 3: increasing oxygen will increase the flame spread rate of hair significantly. 441 00:24:51,119 --> 00:24:54,600 Speaker 3: They say it's by more than an order of magnitude, 442 00:24:54,320 --> 00:24:58,080 Speaker 3: so it's major. And Rabbi included a couple of pictures 443 00:24:58,359 --> 00:25:00,840 Speaker 3: for you to look at here of what the hair 444 00:25:00,920 --> 00:25:05,320 Speaker 3: looked like after being exposed to fire in normal atmosphere 445 00:25:05,400 --> 00:25:10,320 Speaker 3: versus in a thirty percent oxygen atmosphere, and it's a 446 00:25:10,359 --> 00:25:13,600 Speaker 3: major difference. The thirty percent oxygen one looks way more 447 00:25:13,640 --> 00:25:19,080 Speaker 3: like a matted mass of keratin ash goo. Oh yeah, absolutely, Chris, 448 00:25:19,280 --> 00:25:21,440 Speaker 3: So this is something that I don't think I ever 449 00:25:21,480 --> 00:25:24,160 Speaker 3: would have thought of before, but the authors say, yes, 450 00:25:24,200 --> 00:25:28,080 Speaker 3: their findings show that quote in the elevated oxygen concentration 451 00:25:28,240 --> 00:25:32,440 Speaker 3: environments planned for future exploration missions, hair flammability becomes an 452 00:25:32,440 --> 00:25:36,639 Speaker 3: important consideration for cru safety. With the high flame spread 453 00:25:36,680 --> 00:25:40,040 Speaker 3: rates reported here, an astronaut's entire head would be engulfed 454 00:25:40,080 --> 00:25:43,719 Speaker 3: in flames in seconds, and serious injury could occur before 455 00:25:43,760 --> 00:25:47,400 Speaker 3: the flames are extinguished. It is suggested that acceptable mitigation 456 00:25:47,520 --> 00:25:51,959 Speaker 3: strategies such as hair coverings be adopted and shaving be encouraged. 457 00:25:52,760 --> 00:25:55,320 Speaker 3: And they talk about a number of different interventions you 458 00:25:55,320 --> 00:25:58,879 Speaker 3: could employ soul. Yeah, you could like cut hair. You 459 00:25:58,920 --> 00:26:01,879 Speaker 3: could shave parts of the body. You could shave the head. 460 00:26:02,320 --> 00:26:05,840 Speaker 3: You could cover the hair with flame retardant kind of 461 00:26:05,920 --> 00:26:10,920 Speaker 3: hair coverings and materials. You can put flame resistant gels 462 00:26:11,000 --> 00:26:13,560 Speaker 3: and jellies in the hair. They mentioned several of these 463 00:26:13,640 --> 00:26:16,600 Speaker 3: that in some cases are used and have been used. 464 00:26:17,080 --> 00:26:20,400 Speaker 3: So there are different interventions you could do. But ultimately 465 00:26:20,440 --> 00:26:24,879 Speaker 3: they say, if you have elevated oxygen levels and you 466 00:26:24,920 --> 00:26:27,159 Speaker 3: are trying to prevent fires, you really do need to 467 00:26:27,200 --> 00:26:28,160 Speaker 3: think about human hair. 468 00:26:28,600 --> 00:26:30,280 Speaker 1: Wow, you know, I can't help but think about like 469 00:26:30,320 --> 00:26:32,920 Speaker 1: the sci fi ramifications. And on one level, I love 470 00:26:32,960 --> 00:26:37,879 Speaker 1: the idea of like hairless shaved astronauts. You know that 471 00:26:38,520 --> 00:26:40,600 Speaker 1: you have removed all their hair in order to prevent 472 00:26:40,640 --> 00:26:43,040 Speaker 1: this from happening. But On the other hand, I kind 473 00:26:43,080 --> 00:26:44,840 Speaker 1: of like the idea of a bunch of astronauts that 474 00:26:44,880 --> 00:26:48,040 Speaker 1: are using some sort of especially made palmade Yeah, and 475 00:26:48,119 --> 00:26:50,400 Speaker 1: I'll have some sort of like a maybe slicked back 476 00:26:50,440 --> 00:26:54,560 Speaker 1: greaser look going on with this special space space goop. 477 00:26:54,840 --> 00:27:00,480 Speaker 3: Yeah, everybody looks like John Travolta. They in grease. They've 478 00:27:00,480 --> 00:27:05,399 Speaker 3: all got the space pompadoors that the Yeah, the flame 479 00:27:05,440 --> 00:27:06,879 Speaker 3: retardant jelly in there. 480 00:27:07,680 --> 00:27:09,879 Speaker 1: Yeah, like the Misfits right where they have the hair 481 00:27:09,960 --> 00:27:12,360 Speaker 1: all crafted. Now, I got to keep an eye out 482 00:27:12,359 --> 00:27:14,040 Speaker 1: for it. I keep watching all these space movies, and 483 00:27:14,080 --> 00:27:16,920 Speaker 1: I have not been paying enough attention to everyone's hairstyles. 484 00:27:17,240 --> 00:27:20,520 Speaker 1: Which space movie has the has the most slicked back hair? 485 00:27:20,560 --> 00:27:23,600 Speaker 1: Where is the most palmate employed in science fiction? I'm 486 00:27:23,600 --> 00:27:25,040 Speaker 1: gonna have to be on the lookout for it now. 487 00:27:25,280 --> 00:27:27,840 Speaker 3: So anyway, this is one of these classic rabbit holes 488 00:27:28,000 --> 00:27:30,399 Speaker 3: I love on our show that I would not have 489 00:27:30,440 --> 00:27:32,240 Speaker 3: expected to go in this direction at all. I was 490 00:27:32,240 --> 00:27:34,560 Speaker 3: initially just looking into, like what's going on with the 491 00:27:34,600 --> 00:27:36,600 Speaker 3: with the chemistry of burning hair, and I ended up 492 00:27:36,640 --> 00:27:39,280 Speaker 3: with the threats of hair catching on fire in space. 493 00:27:49,840 --> 00:27:53,359 Speaker 1: You know, we mentioned boarding actions earlier, and one of 494 00:27:53,400 --> 00:27:56,120 Speaker 1: the first places that my mind went when we started 495 00:27:56,160 --> 00:28:03,040 Speaker 1: looking into this was what about Blackbeard the Pirate. So 496 00:28:04,000 --> 00:28:06,480 Speaker 1: black Beard the Pirate was, of course a real person 497 00:28:07,000 --> 00:28:12,640 Speaker 1: that has been mythologized and fictionalized to varying degrees over time, 498 00:28:12,720 --> 00:28:16,000 Speaker 1: but this was an actual pirate, Edward Teach, who reportedly 499 00:28:16,040 --> 00:28:20,359 Speaker 1: lives sixteen eighty through seventeen eighteen. And yeah, there's a 500 00:28:20,359 --> 00:28:24,000 Speaker 1: great deal of legend about this man, including the idea 501 00:28:24,119 --> 00:28:27,560 Speaker 1: that he would affix slow matches. Sometimes these are just 502 00:28:27,600 --> 00:28:32,679 Speaker 1: called fuses, but slow matches were they would have all 503 00:28:32,680 --> 00:28:35,359 Speaker 1: like coils of this stuff. They burned slow, as the 504 00:28:35,440 --> 00:28:38,760 Speaker 1: name implies, they burned very hot, and they're used for 505 00:28:38,920 --> 00:28:44,280 Speaker 1: igniting like the fuses for cannons, explosive materials, grenades, that 506 00:28:44,400 --> 00:28:46,800 Speaker 1: sort of thing, but also of course could be used 507 00:28:46,840 --> 00:28:48,560 Speaker 1: to like light pipes and so forth. 508 00:28:48,840 --> 00:28:50,800 Speaker 3: I think even at the time, well I don't know 509 00:28:50,800 --> 00:28:52,920 Speaker 3: if exactly at this time, but they were used, and 510 00:28:53,000 --> 00:28:56,240 Speaker 3: even handheld firearms at the time, like muskets and stuff 511 00:28:56,280 --> 00:28:58,320 Speaker 3: would have like they'd have like a powder pan with 512 00:28:58,360 --> 00:28:59,880 Speaker 3: a slow match that ignited it. 513 00:29:00,280 --> 00:29:02,160 Speaker 1: Yeah, and so it would be common to have these 514 00:29:02,200 --> 00:29:05,440 Speaker 1: on hand. But of course part of the mystique of 515 00:29:05,520 --> 00:29:09,000 Speaker 1: black beard, is that he wouldn't just have burning slow matches, 516 00:29:09,040 --> 00:29:12,360 Speaker 1: say on his belt or whatnot, He would have them 517 00:29:12,760 --> 00:29:16,400 Speaker 1: under his hat. And I think this sometimes gets conflated 518 00:29:16,480 --> 00:29:19,840 Speaker 1: into being like woven into his hair or even in 519 00:29:19,920 --> 00:29:24,840 Speaker 1: his beard anyway that you frame it slow matches in 520 00:29:25,080 --> 00:29:28,640 Speaker 1: very close proximity to what is generally described and or 521 00:29:28,680 --> 00:29:32,320 Speaker 1: depicted as wild hair and beard. You know, Like the 522 00:29:32,400 --> 00:29:35,000 Speaker 1: idea here is that he would do this before array, 523 00:29:35,160 --> 00:29:38,280 Speaker 1: before a boarding action, to make himself look more fearsome 524 00:29:38,640 --> 00:29:41,840 Speaker 1: with those smoking fuses, with like the little pinpoints of 525 00:29:41,920 --> 00:29:46,280 Speaker 1: red ember sticking out on either side of his fearsome head. 526 00:29:46,640 --> 00:29:48,960 Speaker 3: So, of course I'm familiar with the story. I've heard 527 00:29:48,960 --> 00:29:50,840 Speaker 3: it many times, but this is one of those things 528 00:29:50,840 --> 00:29:54,920 Speaker 3: that has never made sense to me because I think, like, 529 00:29:55,080 --> 00:29:58,840 Speaker 3: how how do you actually do that and like operate 530 00:29:58,920 --> 00:30:02,800 Speaker 3: like move around and stuff with things on fire tangled 531 00:30:02,800 --> 00:30:05,720 Speaker 3: in your beard, And wouldn't it be producing some amount 532 00:30:05,760 --> 00:30:08,520 Speaker 3: of smoke or fumes at least would it beginning in 533 00:30:08,560 --> 00:30:09,840 Speaker 3: your face? I don't know. 534 00:30:10,120 --> 00:30:12,160 Speaker 1: I mean, I guess it's a very just few intensive 535 00:30:12,240 --> 00:30:16,080 Speaker 1: environment anyway, if their cannons going off, muskets firing, and 536 00:30:16,120 --> 00:30:19,400 Speaker 1: then you know, folks are smoking as well. That's something 537 00:30:19,400 --> 00:30:22,400 Speaker 1: worth noting, I guess is I've never been a smoker. Smokers, 538 00:30:22,440 --> 00:30:24,800 Speaker 1: of course, by practice, are going to have frequently have 539 00:30:25,360 --> 00:30:28,800 Speaker 1: burning objects in close proximity to their hair and beard, 540 00:30:28,880 --> 00:30:30,760 Speaker 1: and may have additional thoughts in all of this, like 541 00:30:30,840 --> 00:30:34,080 Speaker 1: I don't know how often, how often, say, just a 542 00:30:34,120 --> 00:30:38,280 Speaker 1: smoker of cigarettes with a prominent beard would encounter some 543 00:30:38,320 --> 00:30:40,960 Speaker 1: sort of a beard burn scenario. But then again again 544 00:30:41,000 --> 00:30:43,880 Speaker 1: we have to remember that a slow match would have 545 00:30:44,000 --> 00:30:47,680 Speaker 1: I believe burnt much hotter than your average cigarette or 546 00:30:47,760 --> 00:30:50,840 Speaker 1: pipe or whatnot. Yeah, anyway, so yeah, I had questions 547 00:30:50,880 --> 00:30:54,840 Speaker 1: about this too, like did he really do this? Was 548 00:30:54,880 --> 00:30:58,880 Speaker 1: this safe? I mean, I'm not particularly worried about Blackbeard's 549 00:30:59,040 --> 00:31:02,959 Speaker 1: personal safety toil, but is this feasible? And so I 550 00:31:03,000 --> 00:31:08,400 Speaker 1: was looking around at some serious texts about Blackbeard and pirates, 551 00:31:08,840 --> 00:31:11,080 Speaker 1: and a number of them, number of them didn't really 552 00:31:11,120 --> 00:31:13,200 Speaker 1: do much deliberation on this point. They just kind of 553 00:31:13,200 --> 00:31:14,840 Speaker 1: mention it. And there's you know, there's a lot of 554 00:31:14,960 --> 00:31:18,400 Speaker 1: there's a lot more pressing history to discuss here, So 555 00:31:18,520 --> 00:31:20,680 Speaker 1: not a slide at those sources at all. I also 556 00:31:20,800 --> 00:31:24,280 Speaker 1: ran across at least a few more casual commentators who 557 00:31:24,360 --> 00:31:26,680 Speaker 1: dismissed it as a myth because they said, well, this 558 00:31:26,680 --> 00:31:29,680 Speaker 1: would have surely caught his hair on fire, so it 559 00:31:30,080 --> 00:31:33,280 Speaker 1: you know, he almost certainly didn't do it. But I 560 00:31:33,480 --> 00:31:36,800 Speaker 1: did finally find discussion of it in Dinnerson Little's twenty 561 00:31:36,800 --> 00:31:40,440 Speaker 1: sixteen book The Golden Age of Piracy, The Truth behind 562 00:31:40,600 --> 00:31:43,640 Speaker 1: Pirate Myths, and so he attributes, you know, a lot 563 00:31:43,640 --> 00:31:47,480 Speaker 1: of this myth making to Captain Charles Johnson's seventeen twenty 564 00:31:47,520 --> 00:31:50,360 Speaker 1: four book A General History of the Robberies and Murders 565 00:31:50,400 --> 00:31:53,760 Speaker 1: of the most most Notorious Pirates that's spelled p y 566 00:31:53,960 --> 00:31:54,840 Speaker 1: R A T E S. 567 00:31:55,160 --> 00:31:57,520 Speaker 3: Gotta love pirate with y Yeah. 568 00:31:57,720 --> 00:32:00,920 Speaker 1: And we have to note that the actual identity of 569 00:32:01,000 --> 00:32:04,720 Speaker 1: this author remains unknown. There is apparently no record of 570 00:32:04,800 --> 00:32:08,120 Speaker 1: such a Captain Johnson, and some have even argued that 571 00:32:08,160 --> 00:32:14,120 Speaker 1: the author here is actually Daniel Defoe. Yeah, of Robinson Crusoe, Yeah, exactly. 572 00:32:14,200 --> 00:32:16,960 Speaker 1: So we ultimately don't know for sure. I think historians 573 00:32:17,040 --> 00:32:19,000 Speaker 1: kind of go back and forth with different theories, but 574 00:32:19,040 --> 00:32:22,000 Speaker 1: it seems to be agreed upon that whoever wrote this, 575 00:32:22,920 --> 00:32:26,160 Speaker 1: they had some talent for fiction. They also had a 576 00:32:26,200 --> 00:32:30,280 Speaker 1: great love of facts and details, and the resulting work 577 00:32:30,360 --> 00:32:31,840 Speaker 1: is kind of a mix of the two. So you 578 00:32:31,920 --> 00:32:35,040 Speaker 1: have you do have some factual information that's very helpful 579 00:32:35,080 --> 00:32:38,239 Speaker 1: to the historian, but you also have plenty of just 580 00:32:38,240 --> 00:32:40,000 Speaker 1: blatant fiction mixed in as well. 581 00:32:40,480 --> 00:32:43,080 Speaker 3: Oh well, that kind of source is in a way great. 582 00:32:43,160 --> 00:32:46,240 Speaker 3: I mean, it makes it not as very frustrating as 583 00:32:46,280 --> 00:32:49,800 Speaker 3: a historical source, but also an interesting problem for historians. 584 00:32:50,040 --> 00:32:54,040 Speaker 1: Right right now, on the slow match in or adjacent 585 00:32:54,080 --> 00:32:58,080 Speaker 1: to the hair, in particular, the author little here adds 586 00:32:58,120 --> 00:33:02,640 Speaker 1: the following quote. Still pirates, privateers, merchant seamen and naval 587 00:33:02,680 --> 00:33:06,440 Speaker 1: seamen tasked with throwing grenades in battle sometimes carried the 588 00:33:06,440 --> 00:33:09,840 Speaker 1: burning slow match needed to light the grenade fuses in 589 00:33:09,920 --> 00:33:12,760 Speaker 1: their hats, but it was more usual to tie it 590 00:33:12,800 --> 00:33:15,560 Speaker 1: around a wrist or pin it to their clothing or 591 00:33:15,680 --> 00:33:20,440 Speaker 1: hat with a match case. Although one image of Jean Bart, 592 00:33:20,600 --> 00:33:23,800 Speaker 1: the famous French privateer in the service of France, shows 593 00:33:23,880 --> 00:33:26,920 Speaker 1: him with a length of lighted match held in his teeth. 594 00:33:27,560 --> 00:33:30,960 Speaker 1: Ugh and so he adds that Captain Johnson or whoever 595 00:33:31,200 --> 00:33:34,680 Speaker 1: was behind that pseudonym, would have surely seen the image 596 00:33:34,680 --> 00:33:37,640 Speaker 1: in question. They would have been familiar with this idea. 597 00:33:37,720 --> 00:33:41,200 Speaker 1: This image of Bart, and so he and he also 598 00:33:41,240 --> 00:33:44,640 Speaker 1: points out that the slow match again burns slow but 599 00:33:44,840 --> 00:33:48,080 Speaker 1: very hot by design in order to light fuses that, 600 00:33:48,120 --> 00:33:52,040 Speaker 1: despite what movies and looney tune cartoons portray, can be 601 00:33:52,200 --> 00:33:54,440 Speaker 1: rather hard to light. That's why you need a slow fuse. 602 00:33:54,480 --> 00:33:57,080 Speaker 1: You can't just you know, you couldn't just strike a 603 00:33:57,160 --> 00:33:59,520 Speaker 1: match and so forth. You need something hot and more 604 00:33:59,640 --> 00:34:01,960 Speaker 1: or less consistent. And then this is where he finally 605 00:34:02,000 --> 00:34:03,400 Speaker 1: gets to the part. This is where Little gets to 606 00:34:03,440 --> 00:34:05,920 Speaker 1: the part that I was wondering about. He adds, quote, 607 00:34:06,120 --> 00:34:11,240 Speaker 1: slow matches could thus easily ignite hair, and a pirate's greasy, tarry, 608 00:34:11,360 --> 00:34:15,120 Speaker 1: flaming beard would have been a hellish spectacle and one 609 00:34:15,280 --> 00:34:19,319 Speaker 1: probably never repeat it. So I guess that's as close 610 00:34:19,400 --> 00:34:22,600 Speaker 1: to an answer as I could really find. Basically, like, yes, 611 00:34:23,120 --> 00:34:26,480 Speaker 1: slow matches on the hat, in the hat and so forth, 612 00:34:26,600 --> 00:34:29,799 Speaker 1: that's going to be expected to a degree, But there's 613 00:34:29,840 --> 00:34:33,160 Speaker 1: like a fine line. You wouldn't want to push it 614 00:34:33,200 --> 00:34:35,919 Speaker 1: too far, and if someone did push it too far, 615 00:34:36,280 --> 00:34:39,680 Speaker 1: it would be notable. You know, that pirate would ever, 616 00:34:40,000 --> 00:34:42,640 Speaker 1: would forever be remembered as the guy whose head went 617 00:34:42,760 --> 00:34:45,040 Speaker 1: up in a ball of fire because he was trying 618 00:34:45,040 --> 00:34:47,319 Speaker 1: to be a little bit too dramatic in the boarding action, 619 00:34:47,920 --> 00:34:50,800 Speaker 1: and other pirates would decide, well, you know, I'll just 620 00:34:50,880 --> 00:34:53,320 Speaker 1: keep it on the hat. Maybe I'll just tie it 621 00:34:53,320 --> 00:34:53,800 Speaker 1: to the wrist. 622 00:34:54,040 --> 00:34:56,360 Speaker 3: I'm trying to think. Okay, so that's sort of a 623 00:34:56,440 --> 00:34:59,719 Speaker 3: count against this story, I guess, of black Beard putting 624 00:34:59,760 --> 00:35:03,960 Speaker 3: them in beard. I wonder is it possible that along 625 00:35:04,000 --> 00:35:06,480 Speaker 3: the lines of this, like NASA research we're looking at 626 00:35:06,680 --> 00:35:09,320 Speaker 3: where you could put some kind of gels or jellies, 627 00:35:09,360 --> 00:35:11,520 Speaker 3: you know, flame resistant gels or jellies in the hair. 628 00:35:11,840 --> 00:35:14,680 Speaker 3: There's something that would have been available in the seventeenth 629 00:35:14,760 --> 00:35:17,680 Speaker 3: or eighteenth century. You could like wax your beard with 630 00:35:17,719 --> 00:35:20,759 Speaker 3: a flame resistant material that would like prevent it from 631 00:35:20,840 --> 00:35:22,880 Speaker 3: catching on fire. I'm just spitballing here. 632 00:35:22,800 --> 00:35:24,759 Speaker 1: I guess. So, I mean, two things we have to 633 00:35:24,760 --> 00:35:27,600 Speaker 1: consider about pirates without going into a deep dive on 634 00:35:27,640 --> 00:35:30,399 Speaker 1: like the actual realities of pirates, is that in some 635 00:35:30,440 --> 00:35:35,200 Speaker 1: cases these were learned men or women, you know, that 636 00:35:36,040 --> 00:35:39,799 Speaker 1: that might be pretty to information like that that would 637 00:35:39,840 --> 00:35:44,560 Speaker 1: be useful. Also, that they could just be clever enough 638 00:35:44,560 --> 00:35:46,920 Speaker 1: to figure out something that would work if they were 639 00:35:47,000 --> 00:35:49,440 Speaker 1: that attached to this dramatic flare they had in mind. 640 00:35:50,000 --> 00:35:53,000 Speaker 1: But On the other hand, I feel like, you know, 641 00:35:53,200 --> 00:35:58,480 Speaker 1: pirates are making bad life choices, so that can include, 642 00:35:59,440 --> 00:36:01,560 Speaker 1: you know, risk your head going up in flames. 643 00:36:02,120 --> 00:36:04,880 Speaker 3: More thoughts about the beard, Okay, I can imagine the 644 00:36:04,880 --> 00:36:07,800 Speaker 3: plausibility of it would be affected by I think, how 645 00:36:08,040 --> 00:36:10,920 Speaker 3: long the slow match you're putting in the beard is? Like, 646 00:36:10,960 --> 00:36:13,759 Speaker 3: if it's significantly long and hanging out, that sort of 647 00:36:13,800 --> 00:36:16,960 Speaker 3: gets it away from your face. But the longer the 648 00:36:17,000 --> 00:36:19,600 Speaker 3: match you put in, the heavier it would be, in 649 00:36:19,640 --> 00:36:21,080 Speaker 3: which case I would think, how do you get it 650 00:36:21,080 --> 00:36:23,239 Speaker 3: to stay in the beard? Do you literally have to 651 00:36:23,280 --> 00:36:26,120 Speaker 3: like tie it inside a braid in your beard or something, 652 00:36:26,200 --> 00:36:29,160 Speaker 3: so you know what I'm saying, like just sticking it 653 00:36:29,200 --> 00:36:32,080 Speaker 3: in there? I don't know. I mean, beard hair can 654 00:36:32,120 --> 00:36:35,000 Speaker 3: be kind of thick and tangly, so you can imagine 655 00:36:35,040 --> 00:36:38,719 Speaker 3: sticking something in a beard that's not very heavy and 656 00:36:38,800 --> 00:36:41,240 Speaker 3: it stays there. But I don't know, a significant length 657 00:36:41,280 --> 00:36:43,719 Speaker 3: of something like rope or a slow match seems like 658 00:36:43,719 --> 00:36:45,759 Speaker 3: that would start getting heavy enough to just fall out. 659 00:36:46,040 --> 00:36:49,520 Speaker 1: Yeah. Going back to some of these illustrations, these classic 660 00:36:49,560 --> 00:36:53,600 Speaker 1: illustrations of black Beard, I guess the idea is that 661 00:36:54,160 --> 00:36:56,880 Speaker 1: he would take a length of slow match like place 662 00:36:56,920 --> 00:36:59,120 Speaker 1: it over his head and then put the hat on 663 00:36:59,160 --> 00:37:01,600 Speaker 1: top of it, and then you have either end of 664 00:37:01,600 --> 00:37:05,440 Speaker 1: the slow match sticking out on each side. Still I 665 00:37:05,480 --> 00:37:07,799 Speaker 1: think too close for comfort to the rest of his 666 00:37:07,880 --> 00:37:11,320 Speaker 1: hair and his beard. But the way it's physician, maybe 667 00:37:11,360 --> 00:37:15,440 Speaker 1: it has the burning tips of the matches sticking out 668 00:37:15,440 --> 00:37:16,200 Speaker 1: to either side. 669 00:37:16,560 --> 00:37:19,279 Speaker 3: Ah yeah, Okay, I guess that's more plausible because I 670 00:37:19,320 --> 00:37:22,520 Speaker 3: was imagining it literally being just in the beard, tangled 671 00:37:22,520 --> 00:37:23,080 Speaker 3: in the beard. 672 00:37:23,160 --> 00:37:23,279 Speaker 2: Man. 673 00:37:23,560 --> 00:37:26,000 Speaker 1: I think it sometimes gets conflated to that, either through 674 00:37:26,080 --> 00:37:29,080 Speaker 1: storytelling and embellishment or just by looking at a picture 675 00:37:29,160 --> 00:37:33,239 Speaker 1: like this, where like the famous illustration in question, it's 676 00:37:33,239 --> 00:37:37,160 Speaker 1: like his beard is already in kind of like squidlike arms, 677 00:37:37,440 --> 00:37:41,360 Speaker 1: like like dreads, and then the slow match also looks 678 00:37:41,400 --> 00:37:43,239 Speaker 1: like a dread coming out on either side of his 679 00:37:43,360 --> 00:37:44,880 Speaker 1: head that is then producing smoke. 680 00:37:45,920 --> 00:37:49,360 Speaker 3: Okay, but I see I was mentally personally supplying some 681 00:37:49,400 --> 00:37:52,200 Speaker 3: of the more implausible elements myself there that it was 682 00:37:52,239 --> 00:37:55,520 Speaker 3: like necessarily said to be in the beard. That's maybe 683 00:37:55,560 --> 00:37:58,040 Speaker 3: a less common variation on the idea, but. 684 00:37:58,000 --> 00:38:00,560 Speaker 1: I think it's out there. Like I said, there's so 685 00:38:00,719 --> 00:38:06,640 Speaker 1: much you know, myth making and an exaggeration in pirate 686 00:38:06,680 --> 00:38:10,759 Speaker 1: mythology that I think it just inevitably goes there. All right. Well, 687 00:38:10,800 --> 00:38:12,600 Speaker 1: on that note, I think we're going to go ahead 688 00:38:12,719 --> 00:38:15,120 Speaker 1: and call this part one, but we will be back 689 00:38:15,280 --> 00:38:17,120 Speaker 1: for a second episode. I think this is just going 690 00:38:17,160 --> 00:38:19,400 Speaker 1: to be a two parter. But in the next episode 691 00:38:19,440 --> 00:38:22,040 Speaker 1: we'll get a little bit into the idea of the 692 00:38:22,120 --> 00:38:26,440 Speaker 1: quest for flaming hair and flaming beards and mythology and folklore. 693 00:38:26,800 --> 00:38:31,359 Speaker 1: We'll also get into some examples from antiquity, so I think, 694 00:38:31,400 --> 00:38:34,200 Speaker 1: and probably some other angles as well that we haven't 695 00:38:34,280 --> 00:38:37,040 Speaker 1: worked out just yet. But yeah, we thought this was 696 00:38:37,080 --> 00:38:39,399 Speaker 1: going to be a one partner, but I think there's 697 00:38:39,480 --> 00:38:42,200 Speaker 1: enough interesting stuff for two here. In the meantime, we'll 698 00:38:42,200 --> 00:38:44,400 Speaker 1: remind you that Stuff to Will Your Mind is primarily 699 00:38:44,400 --> 00:38:47,200 Speaker 1: a science and culture podcast, with core episodes on Tuesdays 700 00:38:47,200 --> 00:38:51,640 Speaker 1: and Thursdays. Let's see. Currently we are doing short form 701 00:38:51,680 --> 00:38:56,279 Speaker 1: episodes on Wednesdays. We're doing Weird House Cinema on Fridays. Now, 702 00:38:56,320 --> 00:38:59,920 Speaker 1: you might notice that our Monday listener mail episodes have 703 00:39:00,280 --> 00:39:03,720 Speaker 1: ceased for the time being. We're experimenting with a slightly 704 00:39:03,719 --> 00:39:06,640 Speaker 1: different format, going back to the old format of having 705 00:39:06,840 --> 00:39:10,680 Speaker 1: listener mail episodes occur, say, every month or so and 706 00:39:10,840 --> 00:39:15,000 Speaker 1: instead running a weird House cinema rerun in that Monday slot. Again, 707 00:39:15,040 --> 00:39:17,319 Speaker 1: we're just trying things out here, so if you have 708 00:39:17,400 --> 00:39:19,880 Speaker 1: thoughts on this experiment right in, we would love to 709 00:39:19,920 --> 00:39:20,440 Speaker 1: hear from you. 710 00:39:20,680 --> 00:39:22,920 Speaker 3: Right so, want to be super clear, listener mail is 711 00:39:22,960 --> 00:39:25,640 Speaker 3: not going away. Please keep the messages coming. We are 712 00:39:25,719 --> 00:39:27,719 Speaker 3: still going to read them on the show, just on 713 00:39:27,760 --> 00:39:31,959 Speaker 3: a less frequent basis. The plan is roughly every month, 714 00:39:32,000 --> 00:39:33,600 Speaker 3: month and a half, more like we used to do 715 00:39:33,760 --> 00:39:35,240 Speaker 3: before the weekly. 716 00:39:35,880 --> 00:39:39,400 Speaker 1: Yeah. So, if you have experiences with burning hair some 717 00:39:39,520 --> 00:39:43,000 Speaker 1: pirate thoughts to share, or certainly if you have thoughts 718 00:39:43,040 --> 00:39:47,879 Speaker 1: about standard issue Flamer units on space missions and deep 719 00:39:47,920 --> 00:39:51,120 Speaker 1: sea missions in science fiction, right in, we'd love to 720 00:39:51,160 --> 00:39:51,640 Speaker 1: hear from you. 721 00:39:52,160 --> 00:39:55,840 Speaker 3: Huge thanks as always to our excellent audio producer JJ Posway. 722 00:39:55,920 --> 00:39:57,520 Speaker 3: If you would like to get in touch with us 723 00:39:57,560 --> 00:40:00,000 Speaker 3: with feedback on this episode or any other, to suggest 724 00:40:00,120 --> 00:40:02,759 Speaker 3: to topic for the future, or just to say hello, you 725 00:40:02,800 --> 00:40:05,279 Speaker 3: can email us at contact at stuff to Blow your 726 00:40:05,360 --> 00:40:13,480 Speaker 3: Mind dot com. 727 00:40:13,520 --> 00:40:16,440 Speaker 2: Stuff to Blow Your Mind is production of iHeartRadio. For 728 00:40:16,520 --> 00:40:19,319 Speaker 2: more podcasts from my Heart Radio, visit the iHeartRadio app, 729 00:40:19,480 --> 00:40:36,240 Speaker 2: Apple Podcasts, or wherever you listen to your favorite shows,