1 00:00:00,040 --> 00:00:05,120 Speaker 1: Okay, imagine this a natural disaster, but so vast, so 2 00:00:05,240 --> 00:00:09,279 incredibly powerful. It doesn't just you know, reshape a landscape. 3 00:00:09,400 --> 00:00:12,480 It fundamentally alters the path of human civilization. 4 00:00:12,800 --> 00:00:13,640 Speaker 2: That's a big thought. 5 00:00:13,800 --> 00:00:16,519 Speaker 1: It is. We're talking about something that could literally cloak 6 00:00:16,559 --> 00:00:20,359 the sun, poison our water, change life on Earth for decades, 7 00:00:20,760 --> 00:00:24,920 like hitting a global reset button, a forced reset exactly. 8 00:00:25,320 --> 00:00:29,000 And what if scientists haven't just like theorized about this 9 00:00:29,079 --> 00:00:32,560 colossal force, but they've actually pinpointed where it might happen 10 00:00:32,679 --> 00:00:34,840 and they're gaining real insights into its future. 11 00:00:35,000 --> 00:00:37,200 Speaker 2: Well, that's exactly what we're diving into today. 12 00:00:37,320 --> 00:00:39,840 Speaker 1: Welcome everyone to a deep dive into one of Earth's 13 00:00:39,880 --> 00:00:46,920 most stunningly beautiful, yet let's be honest, undeniably terrifying, geological wonders, 14 00:00:47,359 --> 00:00:48,280 a super volcano. 15 00:00:48,359 --> 00:00:50,560 Speaker 2: Today, we're going to unpack the science, the cutting edge 16 00:00:50,600 --> 00:00:53,600 science behind these planetary powerhouses. 17 00:00:53,640 --> 00:00:56,280 Speaker 1: Well, zero in on the specific case of the Yellowstone System, 18 00:00:56,320 --> 00:00:58,200 which I think fascinates everyone. 19 00:00:57,960 --> 00:01:00,840 Speaker 2: It really does, and we'll explore what recas have recently 20 00:01:00,920 --> 00:01:03,679 uncovered about its complex inner workings and. 21 00:01:03,679 --> 00:01:06,280 Speaker 1: What that actually means for its long term potential. Yeah, 22 00:01:06,359 --> 00:01:10,040 our mission today is to navigate through some pretty complex 23 00:01:10,120 --> 00:01:11,200 geological insights. 24 00:01:11,560 --> 00:01:15,120 Speaker 2: Yeah, revealing some surprising facts, crucial context, maybe some things 25 00:01:15,200 --> 00:01:16,239 you haven't thought about. 26 00:01:16,200 --> 00:01:19,799 Speaker 1: So you can truly grasp the immense sort of hidden 27 00:01:19,840 --> 00:01:22,319 forces at play right beneath our feet. 28 00:01:22,519 --> 00:01:25,680 Speaker 2: It's an incredible journey really into the very heart of 29 00:01:25,719 --> 00:01:28,239 our planet. And you know what we're discussing isn't just 30 00:01:28,280 --> 00:01:29,560 a big geological event. 31 00:01:29,680 --> 00:01:31,079 Speaker 1: Well, it's wazy on that it is. 32 00:01:31,120 --> 00:01:35,519 Speaker 2: We're talking about an eruption thousands, literally thousands of times 33 00:01:35,560 --> 00:01:39,319 more powerful than even the most destructive typical volcanoes. We 34 00:01:39,359 --> 00:01:40,359 see thousands. 35 00:01:40,400 --> 00:01:42,280 Speaker 1: That's almost unimaginable, it is. 36 00:01:42,439 --> 00:01:47,079 Speaker 2: And it's capable of causing massive, interconnected disasters globally. Think 37 00:01:47,120 --> 00:01:50,000 about it. Earthquakes that don't just shake a local town, 38 00:01:50,280 --> 00:01:55,760 They reverberate across continents. Wow, rivers of incandescent magma just flowing, 39 00:01:55,879 --> 00:01:57,599 redefining entire landscapes. 40 00:01:57,680 --> 00:01:59,400 Speaker 1: Those ash clouds. 41 00:01:58,920 --> 00:02:02,640 Speaker 2: Exactly, ring ash clouds that don't just briefly dim the sun, 42 00:02:02,799 --> 00:02:06,359 they effectively block it out for years, maybe even decades, 43 00:02:06,760 --> 00:02:08,800 fundamentally altering the global climate. 44 00:02:09,039 --> 00:02:13,800 Speaker 1: That prolonged twilight. That's a really chilling thought. I mean, 45 00:02:14,039 --> 00:02:18,680 beyond the obvious darkness, what about the social impacts, the 46 00:02:18,680 --> 00:02:21,520 psychological stuff we don't often consider stemming from such a 47 00:02:21,560 --> 00:02:22,840 basic shift in our environment. 48 00:02:23,000 --> 00:02:26,800 Speaker 2: It's profound because, as you said, it's not just geological, 49 00:02:27,000 --> 00:02:28,639 it's civilization. 50 00:02:28,120 --> 00:02:32,960 Speaker 1: Altering, plunging the world into this long twilight, immediate food shortages, 51 00:02:33,400 --> 00:02:36,280 flights grounded probably indefinitely. 52 00:02:35,800 --> 00:02:39,599 Speaker 2: And the slow disappearance of entire species. It's this cascading 53 00:02:39,680 --> 00:02:42,680 chain of events, just like you said earlier, like falling dominoes. 54 00:02:42,960 --> 00:02:46,919 Speaker 1: One disaster triggers another, leading to consequences that are well 55 00:02:47,599 --> 00:02:49,599 truly hard to imagine for life as we know it. 56 00:02:50,000 --> 00:02:53,639 But what exactly makes a volcano super? Is there like 57 00:02:53,680 --> 00:02:56,680 a checklist? And where is all this immense power actually 58 00:02:56,680 --> 00:02:58,639 building up right now beneath our feet? 59 00:02:58,680 --> 00:03:01,360 Speaker 2: As you said, those are the key questions, definitely, And 60 00:03:01,400 --> 00:03:03,719 what's really remarkable, and what we'll explore today is how 61 00:03:03,759 --> 00:03:08,479 scientists have been working tirelessly using these incredibly ingenious methods 62 00:03:08,479 --> 00:03:09,879 to understand. 63 00:03:09,319 --> 00:03:12,439 Speaker 1: These systems right because you can't just look exactly. 64 00:03:12,520 --> 00:03:15,479 Speaker 2: They've not only confirmed there are multiple magma reservoirs deep 65 00:03:15,560 --> 00:03:19,719 under Yellowstone, but they've also pinpointed the specific location where 66 00:03:19,759 --> 00:03:22,680 the next let's call it spark mighty goodnight. 67 00:03:22,919 --> 00:03:23,199 Speaker 1: Wow. 68 00:03:23,479 --> 00:03:26,319 Speaker 2: Okay, we'll explore the sophisticated techniques they use to peer 69 00:03:26,439 --> 00:03:28,599 miles beneath the Earth's surface. 70 00:03:28,439 --> 00:03:33,120 Speaker 1: And what these groundbreaking discoveries really mean for our understanding 71 00:03:33,159 --> 00:03:36,000 of the planet's powerful natural rhythms. 72 00:03:36,080 --> 00:03:40,319 Speaker 2: It's a story of science really confronting nature's raw, untamed power. 73 00:03:40,520 --> 00:03:43,240 Speaker 1: Okay, so we've set the stage with the sheer scale 74 00:03:43,360 --> 00:03:47,520 of this, But what fundamentally separates a supervolcano from the 75 00:03:47,680 --> 00:03:50,400 eruptions we usually hear about, you know, the ones like 76 00:03:50,520 --> 00:03:54,719 Vesuvius or those recent flows in Iceland which were impressive 77 00:03:54,759 --> 00:03:58,120 but different. Is it just a bigger version or are 78 00:03:58,159 --> 00:04:00,840 we talking out a whole different category of gas logical beast. 79 00:04:01,000 --> 00:04:03,599 Speaker 2: That's a really crucial distinction, and it goes way beyond 80 00:04:03,719 --> 00:04:07,960 just size. When geologists use the term supervolcano, we're specifically 81 00:04:07,960 --> 00:04:11,000 referring to an eruption that ejects more than one thousand 82 00:04:11,159 --> 00:04:12,840 cubic kilometers of material. 83 00:04:13,120 --> 00:04:16,600 Speaker 1: A thousand cubic kilometers that's hard to visualize. 84 00:04:16,720 --> 00:04:19,519 Speaker 2: It is. To give you some context, think about Lake Superior. 85 00:04:20,120 --> 00:04:23,040 It's roughly that volume of water, but imagine it as 86 00:04:23,160 --> 00:04:25,759 pulverized rock and ash shot into the sky. 87 00:04:26,000 --> 00:04:27,160 Speaker 1: Okay, got it. That's huge. 88 00:04:27,360 --> 00:04:30,720 Speaker 2: Huge. An eruption like that typically registers an eight on 89 00:04:30,759 --> 00:04:34,879 the Volcanic Explosivity Index VEI. That's the top of the scale. 90 00:04:34,959 --> 00:04:37,079 Speaker 1: And a normal big one like Mount Saint Helens. 91 00:04:37,199 --> 00:04:41,000 Speaker 2: Mount Saint Helens in nineteen eighty, which was incredible destructive locally, 92 00:04:41,519 --> 00:04:45,639 was a VII five. It ejected about one cubic kilometer 93 00:04:45,680 --> 00:04:46,600 in material. 94 00:04:46,480 --> 00:04:48,959 Speaker 1: So thousand times less roughly. 95 00:04:49,199 --> 00:04:52,879 Speaker 2: Roughly, Yes, the difference is exponential, thousands of times more pertinent. 96 00:04:53,000 --> 00:04:56,160 So a normal eruption, even a catastrophic one, is a 97 00:04:56,199 --> 00:04:59,279 disaster for the towns and regions right there. Roads blocked, 98 00:04:59,360 --> 00:05:03,199 regional air travel messed up, local ecosystems suffered, but contained 99 00:05:03,439 --> 00:05:07,519 exactly contained relatively speaking. A super volcano, though, impacts the 100 00:05:07,639 --> 00:05:10,639 entire planet a scale of energy release, the sheer volume 101 00:05:10,680 --> 00:05:14,160 and height of material ejected. It's orders of magnitude beyond 102 00:05:14,199 --> 00:05:15,800 what most people can even picture. 103 00:05:15,879 --> 00:05:19,720 Speaker 1: It's a geological force that can actually change global climate decisly. 104 00:05:19,319 --> 00:05:22,399 Speaker 2: And consequently human civilization on a worldwide scale. 105 00:05:22,519 --> 00:05:25,319 Speaker 1: So yeah, definitely not just a bad day for Montana 106 00:05:25,399 --> 00:05:30,639 or Wyoming. We're talking global reach. Devastating consequences lay out 107 00:05:30,680 --> 00:05:33,639 those immediate dramatic consequences for us. What would be the 108 00:05:33,759 --> 00:05:35,639 very first things we'd experience. 109 00:05:35,480 --> 00:05:39,399 Speaker 2: The initial phase, It would be nothing short of cataclysmic 110 00:05:39,560 --> 00:05:42,959 planetary scale. We'd see massive earthquakes, not just tremors, but 111 00:05:43,399 --> 00:05:48,000 ground shaking events, maybe magnitude nine or even higher, rippling 112 00:05:48,040 --> 00:05:52,360 across vast distances, reshaping the landscape itself absolutely and triggering 113 00:05:52,439 --> 00:05:56,920 secondary quakes far away. Simultaneously, you'd have these vast magma flows, 114 00:05:57,199 --> 00:05:59,920 rivers of molten rock pouring across the surface, just al 115 00:06:00,120 --> 00:06:01,639 literating everything. 116 00:06:01,160 --> 00:06:03,680 Speaker 1: Depending on how viscous it is, right fast or slow. 117 00:06:03,639 --> 00:06:07,720 Speaker 2: Exactly, could be slow forming huge lava fields, or incredibly 118 00:06:07,759 --> 00:06:11,240 fast and destructive, especially if water gets involved, creating steam explosions. 119 00:06:11,240 --> 00:06:14,680 But the most immediate, widespread thread, the thing that truly 120 00:06:14,839 --> 00:06:18,600 defines the global catastrophe, would be those colossal. 121 00:06:18,160 --> 00:06:19,759 Speaker 1: Ash clouds, right the sun blockers. 122 00:06:19,879 --> 00:06:23,279 Speaker 2: Yes, these aren't just smoky clouds. They are titanic plumes 123 00:06:23,319 --> 00:06:28,920 of pulverized rock, glass shards, volcanic gases injected high, high 124 00:06:29,000 --> 00:06:32,839 into the atmosphere, stratosphere, maybe even the mesosphere, and they 125 00:06:32,839 --> 00:06:35,879 spread fast across continents. 126 00:06:35,439 --> 00:06:39,560 Speaker 1: And that impact on modern life. Yeah, instantaneous catastrophic air 127 00:06:39,639 --> 00:06:42,800 travel just stops globally, full. 128 00:06:42,639 --> 00:06:46,720 Speaker 2: Stop, immediately. Volcanic ash isn't like dust. It's tiny, sharp, 129 00:06:46,759 --> 00:06:48,160 abrasive glass and rock. 130 00:06:48,360 --> 00:06:50,079 Speaker 1: Lethal for jet engines completely. 131 00:06:50,160 --> 00:06:53,279 Speaker 2: It melts at jet engine temperatures, forms a glassy coating, 132 00:06:53,560 --> 00:06:59,199 clogs fuel nozzles, fouls combustion chambers, grinds parts, catastrophic engine failure. 133 00:06:59,279 --> 00:07:04,160 Speaker 1: So it's not just an inconvenience. It grounds everything worldwide, commercial, military, everything, 134 00:07:04,399 --> 00:07:07,759 Severing supply chains, paralyzing trade, isolating whole continents. 135 00:07:07,879 --> 00:07:11,720 Speaker 2: Think about critical medical supplies, emergency response, even satellite comms 136 00:07:11,720 --> 00:07:14,319 rely on ground infrastructure, which would also be crippled. 137 00:07:14,360 --> 00:07:16,160 Speaker 1: Yeah, then knock on effects are huge. 138 00:07:15,879 --> 00:07:19,240 Speaker 2: Exactly, And the primary most devastating global effect would be 139 00:07:19,279 --> 00:07:21,600 that these ash and gas clouds block out the sun 140 00:07:22,079 --> 00:07:23,160 for a long time. 141 00:07:23,199 --> 00:07:24,040 Speaker 1: How long are we talking? 142 00:07:24,360 --> 00:07:29,319 Speaker 2: Imagine the sky turning this heavy uniform gray, Not for hours, 143 00:07:29,360 --> 00:07:32,680 but for weeks, maybe months, maybe even longer. This drop 144 00:07:32,680 --> 00:07:36,560 in sunlight reaching the surface has immediate, severe consequences. For 145 00:07:36,600 --> 00:07:41,720 agriculture worldwide, photosynthesis just stops pretty much, or it's severely inhibited, 146 00:07:42,120 --> 00:07:46,199 leading to a drastic food shortage. Staple crops, corn, wheat, 147 00:07:46,319 --> 00:07:49,720 rice fail on an unprecedented scale across continents. 148 00:07:49,839 --> 00:07:52,800 Speaker 1: Livestock too. I imagine contaminated feed water. 149 00:07:52,839 --> 00:07:56,680 Speaker 2: Right more food scarcity and beyond farming, think practical stuff, 150 00:07:57,079 --> 00:08:01,800 Planes grounded, as you said, crippling, global legittis, communications relying 151 00:08:01,800 --> 00:08:07,839 on power grids, ground infrastructure severely hampered, isolating communities, nations. 152 00:08:07,439 --> 00:08:09,600 Speaker 1: And the ecological devastation profound. 153 00:08:10,079 --> 00:08:13,160 Speaker 2: The source of light, food, breathable air for countless species 154 00:08:13,199 --> 00:08:16,399 just vanishes, leading to the disappearance of some animal and 155 00:08:16,439 --> 00:08:19,639 tree species, especially those with specific climate needs or short 156 00:08:19,639 --> 00:08:22,680 life cycles. It's that domino effect again, a cascade where 157 00:08:22,680 --> 00:08:25,639 one disaster leads to another, creating a truly terrible time 158 00:08:25,639 --> 00:08:27,160 for Earth and everyone on it. 159 00:08:27,160 --> 00:08:29,639 Speaker 1: It really shifts your perspective, doesn't it. It's not just 160 00:08:29,639 --> 00:08:33,919 some far off geological event. It's civilization altering makes you 161 00:08:34,039 --> 00:08:36,080 realize how interconnected everything. 162 00:08:35,799 --> 00:08:38,120 Speaker 2: Is and how fragile in some ways, yeah. 163 00:08:37,919 --> 00:08:40,639 Speaker 1: Fragile when faced with the raw power of the planet. 164 00:08:41,120 --> 00:08:42,960 And it forces you to think about the kind of 165 00:08:43,039 --> 00:08:47,039 human ingenuity and resilience needed to face something like that, and. 166 00:08:47,120 --> 00:08:49,679 Speaker 2: To really grasp the potential. We need to look at 167 00:08:49,759 --> 00:08:54,600 Yellowstone's own history. It's formidable. This isn't just any volcano. 168 00:08:54,759 --> 00:08:57,480 It's one of the largest volcanic systems in the world, 169 00:08:58,000 --> 00:09:02,799 a true geological behemoth, known for its massive caldera. 170 00:09:02,399 --> 00:09:03,519 Speaker 1: Formed by past eruptions. 171 00:09:03,559 --> 00:09:07,600 Speaker 2: Right exactly, its past reveals this pattern of immense eruptions. 172 00:09:08,000 --> 00:09:10,759 Over the last two point one million years, it's erupted 173 00:09:10,799 --> 00:09:14,679 three times on a super volcanic scale. The earliest, about 174 00:09:14,720 --> 00:09:17,000 two point one million years ago, formed what's called the 175 00:09:17,080 --> 00:09:21,120 Huckleberry Ridge touff. It produced an astounding twenty five hundred 176 00:09:21,159 --> 00:09:22,559 cubic kilometers of ash. 177 00:09:22,559 --> 00:09:24,759 Speaker 1: That's even bigger than the thousand we defined earlier. 178 00:09:24,960 --> 00:09:29,039 Speaker 2: Yeah, oh yeah. Then came the Mesa Fall stuff about 179 00:09:29,080 --> 00:09:33,399 one point three million years ago, smaller but still huge, 180 00:09:33,399 --> 00:09:36,120 around two hundred and eighty cubic kilometers. And the most 181 00:09:36,159 --> 00:09:39,080 recent major one, the Lava Creek toff, happened about six 182 00:09:39,159 --> 00:09:40,600 hundred and forty thousand. 183 00:09:40,279 --> 00:09:42,720 Speaker 1: Years ago, still a long long time ago, a very 184 00:09:42,759 --> 00:09:43,240 long time. 185 00:09:43,320 --> 00:09:47,120 Speaker 2: That one produced one thousand cubic kilometers of ash. The 186 00:09:47,159 --> 00:09:50,879 scale was staggering. Ash from just that Lava Creek eruption 187 00:09:51,000 --> 00:09:53,559 covered an area comparable to about half the entire. 188 00:09:53,440 --> 00:09:55,519 Speaker 1: United States, half the US. Wow. 189 00:09:55,720 --> 00:09:58,120 Speaker 2: Yeah, they find ash layers from it as far away 190 00:09:58,120 --> 00:10:00,240 as the Gulf coast gives you a vivid pic sure 191 00:10:00,279 --> 00:10:01,360 of the volume ejected. 192 00:10:01,440 --> 00:10:04,120 Speaker 1: How did y'all just even figure that out from so 193 00:10:04,279 --> 00:10:04,799 long ago? 194 00:10:04,960 --> 00:10:07,639 Speaker 2: They piece it together by analyzing layers of volcanic rock, 195 00:10:07,679 --> 00:10:11,600 the tough and ash deposited across vast distances. They use 196 00:10:11,679 --> 00:10:14,159 radiometric dating on the minerals to pinpoint the timing, and 197 00:10:14,200 --> 00:10:17,360 they study the immense sunken calderas that mark the sites 198 00:10:17,399 --> 00:10:18,320 of these past eruptions. 199 00:10:18,399 --> 00:10:20,639 Speaker 1: Right, the giant collapsed areas exactly. 200 00:10:20,759 --> 00:10:23,360 Speaker 2: Fortunately, back then, six hundred and forty thousand years ago, 201 00:10:23,399 --> 00:10:26,039 there were no human populations in that immediate region to 202 00:10:26,080 --> 00:10:29,600 witness it or suffer directly. Small mercies indeed, but even 203 00:10:29,639 --> 00:10:33,360 without human impact, nature suffered immensely, took a tremendous hit. 204 00:10:33,519 --> 00:10:38,159 Speaker 1: So Yellowstone's ancient eruptions show the scale. But you mentioned 205 00:10:38,159 --> 00:10:41,639 there's another historical supervolcano that gives us a really stark, 206 00:10:42,159 --> 00:10:45,279 maybe unsettling glimpse into how humanity might fare. 207 00:10:45,519 --> 00:10:50,399 Speaker 2: Ah. Yes, that brings us to the Toba eruption in Indonesia. 208 00:10:49,720 --> 00:10:52,720 Speaker 1: Which some scientists call a near extinction event for our ancestors. 209 00:10:52,799 --> 00:10:56,639 Speaker 2: Right, that's the theory. Yes, the Toba eruption happened about 210 00:10:56,679 --> 00:11:00,159 seventy four thousand years ago in what's now Sumatra. It's 211 00:11:00,159 --> 00:11:04,039 one of the most significant supervolcanic events in recent geological history, 212 00:11:04,279 --> 00:11:06,720 and its impact on early humans is a really hot 213 00:11:06,720 --> 00:11:08,080 topic of scientific debate. 214 00:11:08,200 --> 00:11:10,799 Speaker 1: How big was Toba compared to Yellowstone's last. 215 00:11:10,559 --> 00:11:13,960 Speaker 2: One even bigger? It was a VEI eight ejected in 216 00:11:14,159 --> 00:11:18,200 estimated twenty eight hundred cubic kilometers of material, way more 217 00:11:18,240 --> 00:11:19,519 than Lava Creek's. 218 00:11:19,159 --> 00:11:20,840 Speaker 1: One thousand, Okay, truly massive. 219 00:11:20,960 --> 00:11:24,600 Speaker 2: Massive. The main idea that Toba catastrophe theory suggests this 220 00:11:24,799 --> 00:11:28,440 eruption triggered a severe volcanic winter lasted for several years, 221 00:11:28,759 --> 00:11:31,279 led to a drastic global temperature drop maybe three to 222 00:11:31,320 --> 00:11:34,840 five degrees celsius, potentially even more in higher latitudes, which. 223 00:11:34,639 --> 00:11:36,879 Speaker 1: As we discussed, is huge for ecosystems. 224 00:11:37,240 --> 00:11:43,480 Speaker 2: Exactly, this sudden climate change plus the widespread ashfall disrupted ecosystems, 225 00:11:43,960 --> 00:11:47,879 and the theory is it created a human population bottleneck. 226 00:11:48,000 --> 00:11:50,480 Speaker 1: A bottleneck meaning are numbers crashed. 227 00:11:51,000 --> 00:11:55,000 Speaker 2: Genetic studies show modern humans have surprisingly low genetic diversity 228 00:11:55,039 --> 00:11:58,639 compared to other primates. This suggests our ancestors might have 229 00:11:58,679 --> 00:12:02,720 been reduced to just a few thousand individuals, maybe only 230 00:12:02,759 --> 00:12:05,600 a one thousand to ten thousand breeding pairs left alive, 231 00:12:06,000 --> 00:12:08,399 pushing humanity right to the brink of extinction. 232 00:12:08,639 --> 00:12:10,519 Speaker 1: Wow, that's terrifying. 233 00:12:10,720 --> 00:12:13,679 Speaker 2: It is. However, it's really important to stress this theory 234 00:12:13,759 --> 00:12:15,080 isn't universally confirmed. 235 00:12:15,159 --> 00:12:16,720 Speaker 1: Ah Okay, there's debate. 236 00:12:16,600 --> 00:12:20,720 Speaker 2: There is. The eruption's severity isn't disputed, but archaeological evidence 237 00:12:20,720 --> 00:12:24,279 from places like Southern Africa and India suggests some human 238 00:12:24,320 --> 00:12:28,000 populations might have survived relatively okay, or at least adapted 239 00:12:28,039 --> 00:12:29,519 better than the bottleneck theory. 240 00:12:29,320 --> 00:12:31,639 Speaker 1: Suggests, maybe in pockets refuges. 241 00:12:31,960 --> 00:12:36,279 Speaker 2: Possibly, some research points to specific environmental refugia areas where 242 00:12:36,279 --> 00:12:39,399 conditions stayed more favorable that might have allowed certain groups 243 00:12:39,399 --> 00:12:41,960 to hang on without such a drastic population crash. 244 00:12:42,039 --> 00:12:44,399 Speaker 1: So the jury still out on the exact human impact, 245 00:12:44,600 --> 00:12:45,639 the precise impact. 246 00:12:45,720 --> 00:12:48,720 Speaker 2: Yes, this ongoing debate shows how hard it is to 247 00:12:48,720 --> 00:12:52,200 reconstruct what happened so long ago, but it definitely paints 248 00:12:52,240 --> 00:12:56,639 a stark picture of potential human vulnerability. It forces us 249 00:12:56,720 --> 00:13:00,200 to think about what survival really means in that context. 250 00:13:00,559 --> 00:13:02,399 It's not just weathering the blast. 251 00:13:02,080 --> 00:13:06,559 Speaker 1: It's enduring decades of altered climate, scarce resources, a totally 252 00:13:06,720 --> 00:13:10,000 changed world exactly, and that really puts things into perspective, 253 00:13:10,039 --> 00:13:13,919 doesn't it. Connecting these past events to now underscores the 254 00:13:13,960 --> 00:13:17,320 sheer power and the long term consequences. The Toba debate 255 00:13:17,360 --> 00:13:20,360 itself shows how much we're still learning, but it undeniably 256 00:13:20,399 --> 00:13:23,960 reminds us Earth has done this before, and each time 257 00:13:24,039 --> 00:13:27,279 it's a test of resilience for whatever life exists. Okay, 258 00:13:27,320 --> 00:13:31,960 so Yellowstone, it's this huge, beautiful national park, geysers, hot springs, 259 00:13:32,039 --> 00:13:35,279 mud pots, all these vivid signs of incredible heat underground. 260 00:13:35,399 --> 00:13:38,480 Speaker 2: Yeah, the surface manifestations are spectacular, but that also means 261 00:13:38,519 --> 00:13:39,919 a lot is happening deep down. 262 00:13:40,039 --> 00:13:43,000 Speaker 1: Since it's such a massive volcanic system. How did scientists 263 00:13:43,039 --> 00:13:46,200 figure out where the first spark might come from? How 264 00:13:46,279 --> 00:13:49,759 to even map something miles underground super hot without seeing 265 00:13:49,799 --> 00:13:50,799 it or drilling into it? 266 00:13:50,960 --> 00:13:53,799 Speaker 2: That really is the million dollar question, and the answer 267 00:13:53,840 --> 00:13:58,720 involves some truly ingenious scientific detective work. It lets us 268 00:13:58,799 --> 00:14:01,039 essentially see through through solid rock. 269 00:14:01,519 --> 00:14:02,759 Speaker 1: Okay, I'm intrigued. 270 00:14:02,879 --> 00:14:06,120 Speaker 2: The crucial discovery they made is that Yellowstone's magma doesn't 271 00:14:06,159 --> 00:14:09,559 just pool in one single giant chamber like you might 272 00:14:09,600 --> 00:14:11,639 picture an underground balloon, right. 273 00:14:11,559 --> 00:14:12,919 Speaker 1: That's what I sort of imagine. 274 00:14:12,960 --> 00:14:16,240 Speaker 2: It's more complex. Instead, it hides in several separate but 275 00:14:16,399 --> 00:14:22,360 interconnected underground reservoirs. Think less one giant balloon, more complex 276 00:14:22,480 --> 00:14:27,679 network of smaller pockets, conduits, pathways deep in the Earth's crust, 277 00:14:27,919 --> 00:14:29,559 even reaching into the upper mantle. 278 00:14:29,679 --> 00:14:31,120 Speaker 1: A whole plumbing system down there. 279 00:14:31,159 --> 00:14:33,440 Speaker 2: That's a great way to put it. A complex plumbing system. 280 00:14:33,600 --> 00:14:37,639 It's typical of large caldera systems. Magma rises from a 281 00:14:37,679 --> 00:14:41,679 deep mantle plume, accumulates at different levels, interacts with different 282 00:14:41,799 --> 00:14:42,799 rock layers, and. 283 00:14:42,799 --> 00:14:45,759 Speaker 1: Through their research, they've actually pinpointed a specific spot, a 284 00:14:45,879 --> 00:14:46,919 riskiest reservoir. 285 00:14:47,000 --> 00:14:49,960 Speaker 2: They have in the northeast part of Yellowstone, right next 286 00:14:50,000 --> 00:14:53,240 to a beautiful area called Sour Creek Dome that's identified 287 00:14:53,240 --> 00:14:54,279 as the riskiest spot. 288 00:14:54,360 --> 00:14:57,960 Speaker 1: Okay, why there? What makes Sour Creek Dome special or 289 00:14:58,039 --> 00:14:59,240 rather dangerous? 290 00:14:59,440 --> 00:15:02,759 Speaker 2: The mechanic of why it's riskiest is fascinating. It's where 291 00:15:02,799 --> 00:15:07,200 the red hot molten magma comes into direct sustained contact 292 00:15:07,320 --> 00:15:11,559 with these incandescent, superheated rocks from the mantle deep down. 293 00:15:11,879 --> 00:15:15,519 Speaker 1: So magma meets really really hot deep earth rocks. 294 00:15:15,320 --> 00:15:18,960 Speaker 2: Exactly and the intense continuous heat from these mantle rocks 295 00:15:19,000 --> 00:15:22,159 acts like a constant stove burner. It keeps the magma 296 00:15:22,159 --> 00:15:26,519 perpetually liquid, preventing it from cooling down, solidifying, and losing 297 00:15:26,519 --> 00:15:27,720 its eruptive potential. 298 00:15:27,960 --> 00:15:30,960 Speaker 1: Ah okay, so it's not just that magma is there, 299 00:15:31,039 --> 00:15:34,440 it's that it's being constantly superheated from below, ensuring it 300 00:15:34,480 --> 00:15:37,559 stays liquid and potentially ready to move. Like putting a 301 00:15:37,559 --> 00:15:40,200 pot of hot milk on the stove, nothing cools, it 302 00:15:40,200 --> 00:15:40,840 only gets otter. 303 00:15:41,120 --> 00:15:44,200 Speaker 2: That's a perfect analogy. The milk or magma here might 304 00:15:44,279 --> 00:15:46,600 soon begin to rise and flow out. Same thing under 305 00:15:46,600 --> 00:15:49,279 Sour Creek dome. The magma doesn't cool down there, and 306 00:15:49,320 --> 00:15:51,080 at some point it might start to come out like 307 00:15:51,120 --> 00:15:53,000 a broken pipe gushing boiling water. 308 00:15:53,159 --> 00:15:55,799 Speaker 1: Are we talking about thermal convection? Is this deep hot 309 00:15:55,919 --> 00:15:59,360 mantle material actively driving the system, keeping it charged. 310 00:16:00,759 --> 00:16:03,639 Speaker 2: You've hit a critical point. We are talking about the 311 00:16:03,679 --> 00:16:07,679 influence of a deep seated mantle plume, a column of 312 00:16:07,799 --> 00:16:11,480 unusually hot rock rising from the Earth's mantle. That's the 313 00:16:11,720 --> 00:16:15,080 ultimate heat source powering Yellowstone a hot spot. 314 00:16:15,320 --> 00:16:16,120 Speaker 1: Right, and the. 315 00:16:16,080 --> 00:16:19,720 Speaker 2: Magma reservoirs under Sour Creek dome seem particularly exposed to 316 00:16:19,759 --> 00:16:24,200 this continuous heat flow, keeping the magma highly mobile, primed 317 00:16:24,240 --> 00:16:25,279 for potential ascent. 318 00:16:25,480 --> 00:16:29,919 Speaker 1: But how do they see all this miles down? Incredibly hot? Yeah, 319 00:16:30,080 --> 00:16:31,720 you can't just drill a hole and look. 320 00:16:31,960 --> 00:16:34,840 Speaker 2: No, you definitely can't. Conventional drilling is impossible. 321 00:16:34,879 --> 00:16:37,519 Speaker 1: So what's the magic trick? The scientific method they used 322 00:16:37,519 --> 00:16:38,840 to see this hidden plumbing? 323 00:16:39,159 --> 00:16:42,879 Speaker 2: They used a sophisticated geophysical technique called magneto. 324 00:16:42,519 --> 00:16:44,559 Speaker 1: Telurx magneto te lrix. 325 00:16:44,639 --> 00:16:47,600 Speaker 2: Okay, it's an incredibly cleutter method. It uses the Earth's 326 00:16:47,799 --> 00:16:50,919 natural electromagnetic fields to figure out what's beneath our feet. 327 00:16:51,039 --> 00:16:52,960 Speaker 1: Natural fields like the earth magnetic. 328 00:16:52,600 --> 00:16:56,120 Speaker 2: Fields exactly that, plus fields generated by things like solar 329 00:16:56,159 --> 00:17:00,759 wind interacting with our magnetosphere. These natural electro magnetic waves 330 00:17:00,759 --> 00:17:04,000 are constantly penetrating the Earth. As these waves travel through 331 00:17:04,039 --> 00:17:07,599 the crust and mantle, they interact differently with different materials. 332 00:17:08,039 --> 00:17:12,960 Different geological materials have distinct electrical properties, specifically how well 333 00:17:12,960 --> 00:17:15,240 they conduct electricity their resistivity. 334 00:17:15,480 --> 00:17:18,000 Speaker 1: So different rocks conduct electricity differently. 335 00:17:18,119 --> 00:17:24,759 Speaker 2: Right, and here's the key. Molten rock magma contains dissolved salts, gases, water, 336 00:17:25,400 --> 00:17:28,200 all things that make it much more electrically conductive, meaning 337 00:17:28,279 --> 00:17:33,039 it has lower resistivity than the surrounding solid cooler rock. 338 00:17:33,240 --> 00:17:36,599 Speaker 1: Uh huh, So magma lets electricity flow through it more 339 00:17:36,640 --> 00:17:37,880 easily than solid rock. 340 00:17:38,000 --> 00:17:41,720 Speaker 2: Precisely, think of comparing how electricity flows through saltwater versus 341 00:17:41,839 --> 00:17:44,559 dry sand. Salt water is much more conductive. 342 00:17:44,799 --> 00:17:48,400 Speaker 1: So the instruments on the surface are measuring what these 343 00:17:48,440 --> 00:17:49,319 electrical differences. 344 00:17:49,359 --> 00:17:53,519 Speaker 2: They're measuring variations in the Earth's natural electrical resistivity at depth. 345 00:17:53,799 --> 00:17:56,680 When the sensitive instruments detect a region deep down with 346 00:17:56,920 --> 00:18:00,960 unusually low electrical resistivity meaning it conducts electricas really, well, 347 00:18:01,319 --> 00:18:04,400 that's a strong sign of a large body of liquid magma. 348 00:18:04,559 --> 00:18:07,319 Speaker 1: It's like finding an electrical signature that only magma produces. 349 00:18:07,519 --> 00:18:10,000 So it's kind of like a super sensitive metal detector 350 00:18:10,279 --> 00:18:14,079 finding lost jewelry on the beach, but instead of a ring, 351 00:18:14,559 --> 00:18:20,039 it's finding massive, super hot reservoirs of molten rock miles underground. 352 00:18:20,119 --> 00:18:22,599 Speaker 2: That's a great starting analogy, but yeah, it's more nuanced. 353 00:18:22,640 --> 00:18:26,799 It's detecting that specific change in electrical properties that points 354 00:18:26,960 --> 00:18:31,480 directly to molten rock. The ingenuity is just wild, truly is. 355 00:18:31,759 --> 00:18:34,680 So using magneta to lyrics, they systematically scan the whole 356 00:18:34,759 --> 00:18:37,839 Yellowstone region, put out a rays of these sensors over 357 00:18:38,079 --> 00:18:41,279 huge areas, and doing that, they found not just one, 358 00:18:41,440 --> 00:18:46,759 but four large magma reservoirs at different depths, different configurations, 359 00:18:46,920 --> 00:18:48,559 confirming that complex plumbing system. 360 00:18:48,599 --> 00:18:50,480 Speaker 1: We talked about four reservoirs. 361 00:18:50,400 --> 00:18:53,599 Speaker 2: But the key finding, the real AHA moment, came from 362 00:18:53,640 --> 00:18:56,680 the signals from these reservoirs. Three of them emitted powerful 363 00:18:56,680 --> 00:18:59,960 electromagnetic signals, which you'd expect with all the geothermal ective 364 00:19:00,799 --> 00:19:02,960 But the fourth reservoir, the one in the northeast, right 365 00:19:02,960 --> 00:19:06,079 by Sour Creek Dome, it recorded a much stronger, much 366 00:19:06,119 --> 00:19:08,160 more distinct signal from the magnetic field. 367 00:19:08,279 --> 00:19:09,200 Speaker 1: Stronger, how like. 368 00:19:09,240 --> 00:19:14,960 Speaker 2: Louder exactly, This exceptionally strong signal indicates a significantly higher 369 00:19:14,960 --> 00:19:19,559 concentration of active liquid and potentially more volatile magma right there, 370 00:19:20,119 --> 00:19:23,200 marking that precise location as the spot where an eruption 371 00:19:23,319 --> 00:19:26,160 is most likely to originate. It's like the intensity of 372 00:19:26,200 --> 00:19:29,559 the metal detector's beep was way louder, more specific over 373 00:19:29,599 --> 00:19:33,000 that one spot, signaling a critical accumulation. 374 00:19:33,200 --> 00:19:35,880 Speaker 1: Okay, wow, so we know where it's most likely to happen. 375 00:19:35,920 --> 00:19:37,839 We know how scientists can see it. That's a lot 376 00:19:37,880 --> 00:19:41,400 of intense information. Can we collectively take a breath? Now? 377 00:19:41,680 --> 00:19:44,799 Is this something we need to start packing our bags for? Yeah, shuot, 378 00:19:44,920 --> 00:19:47,039 please tell me there's some good news on the timeline front. 379 00:19:47,160 --> 00:19:50,319 Speaker 2: You absolutely can relax, Yes, take a deep breath. The 380 00:19:50,359 --> 00:19:53,480 good news is, despite pinpointing this location, this event is 381 00:19:53,559 --> 00:19:55,000 definitely not going to happen soon. 382 00:19:55,200 --> 00:19:56,960 Speaker 1: Okay, thank goodness. Define soon. 383 00:19:57,160 --> 00:20:00,920 Speaker 2: We're talking geological time. The scientific can census based on 384 00:20:01,000 --> 00:20:04,960 everything we know, current observations, historical patterns, advance modeling is 385 00:20:04,960 --> 00:20:07,799 a timeframe of perhaps tens of thousands of years, maybe 386 00:20:07,839 --> 00:20:09,359 even hundreds of thousands of years away. 387 00:20:09,480 --> 00:20:12,079 Speaker 1: Tends to hundreds of thousands of years. Okay, that's better, 388 00:20:12,279 --> 00:20:12,799 much better. 389 00:20:13,400 --> 00:20:17,720 Speaker 2: So to be crystal clear, no volcanic apocalypse is coming soon. 390 00:20:17,920 --> 00:20:20,559 This isn't a threat for our generation or our children's, 391 00:20:20,640 --> 00:20:23,119 or likely many many generations down the line. 392 00:20:23,200 --> 00:20:25,680 Speaker 1: It's a geological process on a scale that's hard for 393 00:20:25,759 --> 00:20:27,799 us to grasp day to day exactly. 394 00:20:28,319 --> 00:20:32,039 Speaker 2: And we have robust monitoring systems in place at Yellowstone 395 00:20:32,119 --> 00:20:38,039 constantly seismometers, GPS, TRECK and ground movement gas sensors, thermal monitoring. 396 00:20:37,720 --> 00:20:38,839 Speaker 1: So we'd see warning signs. 397 00:20:38,960 --> 00:20:43,960 Speaker 2: Oh yes, any significant changes ground deformation, increased seismic activity, 398 00:20:44,079 --> 00:20:48,079 changes in gas emissions, those would likely precede an eruption 399 00:20:48,240 --> 00:20:51,160 by months, maybe even years. We'd have warning. 400 00:20:51,359 --> 00:20:55,119 Speaker 1: That is a massive relief. But how does scientists know 401 00:20:55,279 --> 00:20:58,240 when this magma will eventually erupt? Like, magma doesn't have 402 00:20:58,240 --> 00:21:00,599 a little timer on it, right, the volcan doesn't wake 403 00:21:00,680 --> 00:21:03,160 up with an alarm clock set for fifty thousand years 404 00:21:03,160 --> 00:21:03,440 from now. 405 00:21:03,519 --> 00:21:04,440 Speaker 2: Right, No alarm clock. 406 00:21:04,519 --> 00:21:07,119 Speaker 1: So what's the mechanism? How does that pressure build to 407 00:21:07,200 --> 00:21:09,519 the critical point? Does gas play a role in this? 408 00:21:09,720 --> 00:21:13,440 Speaker 2: That's where understanding the really intricate mechanics of how magma 409 00:21:13,480 --> 00:21:17,079 accumulates and interacts with the surrounding rock is vital. Magma 410 00:21:17,160 --> 00:21:19,440 doesn't just sit in a big empty cave down there. 411 00:21:19,440 --> 00:21:20,400 Speaker 1: Right the plumbing system. 412 00:21:20,559 --> 00:21:24,599 Speaker 2: Yes, it flows and exists within the pores and fractures 413 00:21:24,640 --> 00:21:28,480 of solid crystalline rock. You use the sponge andalogy earlier 414 00:21:28,519 --> 00:21:32,400 for water. It's similar. Think of a rigid rocky sponge 415 00:21:32,440 --> 00:21:34,880 with tiny interconnected holes and channels. 416 00:21:34,920 --> 00:21:36,200 Speaker 1: Okay, rock sponge. 417 00:21:36,440 --> 00:21:40,599 Speaker 2: The magma slowly penetrates these pores, gradually filling them up 418 00:21:40,640 --> 00:21:44,119 over immense periods. Now, for that magma to actually start 419 00:21:44,279 --> 00:21:48,079 erupting outwards to overcome the massive weight, the pressure of 420 00:21:48,119 --> 00:21:51,039 all the overlying rock and force its way up, it 421 00:21:51,119 --> 00:21:53,960 has to reach a critical threshold, a tipping point exactly. 422 00:21:54,000 --> 00:21:56,720 It's not just about how much magma there is, it's volume. 423 00:21:57,000 --> 00:21:59,440 It's also about its buoyancy, how much lighter it is 424 00:21:59,440 --> 00:22:02,559 than the surround rock, and crucially the role of dissolved 425 00:22:02,599 --> 00:22:03,640 gases coming out. 426 00:22:03,480 --> 00:22:06,640 Speaker 1: Of solution gases like CO two, water. 427 00:22:06,480 --> 00:22:09,759 Speaker 2: Vapor, carbon dioxide, sulfur dioxide. These are dissolved in the 428 00:22:09,799 --> 00:22:13,440 magma under high pressure. As magma rises and the pressure drops, 429 00:22:13,680 --> 00:22:16,599 these gases start to bubble out, just like opening a 430 00:22:16,640 --> 00:22:17,519 can of soda. 431 00:22:17,319 --> 00:22:20,839 Speaker 1: Releases the fizz okay, creates bubbles, adds pressure. 432 00:22:20,640 --> 00:22:23,920 Speaker 2: Immense internal pressure, and these bubbles also make the magma 433 00:22:24,000 --> 00:22:27,720 much more buoyant, wanting to rise faster. So scientists estimate 434 00:22:27,759 --> 00:22:30,160 that for magma to become truly eruptible, it needs to 435 00:22:30,200 --> 00:22:33,240 fill at least forty percent of those rock pores and 436 00:22:33,319 --> 00:22:36,000 have enough gas bubbling out to provide the explosive force 437 00:22:36,039 --> 00:22:37,279 needed to break through the crust. 438 00:22:37,319 --> 00:22:39,599 Speaker 1: And where are we now? What's the current fill level? 439 00:22:39,799 --> 00:22:42,759 Speaker 2: Currently? The estimates are around twenty percent of the pores 440 00:22:42,799 --> 00:22:45,799 are filled in that active magma body beneath sour Creek dome. 441 00:22:46,119 --> 00:22:50,119 Speaker 1: Okay, so roughly halfway to that critical forty percent threshold. 442 00:22:50,319 --> 00:22:52,839 Speaker 2: Still a long way to go, Still quite a way off, yes, 443 00:22:52,920 --> 00:22:57,319 And remember this process is continuous but slow. Those deep 444 00:22:57,559 --> 00:23:00,839 hot mantle rocks keep heating the magma, keeping it liquid, 445 00:23:00,880 --> 00:23:03,680 allowing it to slowly seep and flow between the pores, 446 00:23:04,039 --> 00:23:08,359 expanding merging. Over tens of millennia, this network will eventually 447 00:23:08,359 --> 00:23:12,200 connect with other pools, forming a massive, unified stream that 448 00:23:12,240 --> 00:23:14,799 then has enough buoyancy and pressure to rise and erupt. 449 00:23:14,960 --> 00:23:17,960 Speaker 1: It's an incredibly slow motion geological process. 450 00:23:17,599 --> 00:23:21,079 Speaker 2: Driven by these inexorable forces. Takes an incredibly long time. 451 00:23:21,480 --> 00:23:24,880 Speaker 1: So if we know all this, we know the spot, 452 00:23:25,000 --> 00:23:28,119 we know the mechanism, can we stop it? Could we, 453 00:23:28,400 --> 00:23:32,960 I don't know, undertake some massive geoengineering project to cool 454 00:23:33,039 --> 00:23:37,240 down those incandescent mantle rocks stop the heating. Seems like 455 00:23:37,319 --> 00:23:39,599 knowing so much should give us some control, Right. 456 00:23:39,720 --> 00:23:42,400 Speaker 2: It's a very human instinct, doesn't it to want to intervene, 457 00:23:42,519 --> 00:23:45,519 especially facing something so potentially catastrophic. 458 00:23:45,680 --> 00:23:46,799 Speaker 1: Absolutely, But when. 459 00:23:46,680 --> 00:23:51,319 Speaker 2: We talk about cooling those mantle rocks, the superheated material 460 00:23:51,440 --> 00:23:54,559 driving the whole thing. The honest answer is it's practically 461 00:23:54,599 --> 00:23:57,759 impossible with any technology we have now or can even 462 00:23:57,799 --> 00:23:59,160 realistically imagine. 463 00:23:59,200 --> 00:24:01,440 Speaker 1: Why not just real down above water? I now it 464 00:24:01,480 --> 00:24:02,240 sounds simplistic. 465 00:24:02,279 --> 00:24:05,519 Speaker 2: Well, First, there's several miles deep. Access is incredibly difficult, 466 00:24:05,599 --> 00:24:09,720 Drilling would be astronomically expensive and challenging. Second, they are incandescent, 467 00:24:09,799 --> 00:24:14,559 literally glowing hot thousands of degrees celsius, constantly radiating immense heat, 468 00:24:15,039 --> 00:24:18,039 and maybe most importantly, the sheer volume of these heated 469 00:24:18,119 --> 00:24:22,400 rocks extending deep into the mantle is astronomical. Any attempt 470 00:24:22,400 --> 00:24:24,000 to cool them, even if we could reach them and 471 00:24:24,079 --> 00:24:25,920 be like like trying to cool the ocean with an 472 00:24:25,920 --> 00:24:26,799 ice cube. 473 00:24:26,599 --> 00:24:28,319 Speaker 1: A drop in an ocean of fire. 474 00:24:28,200 --> 00:24:32,559 Speaker 2: Exactly a futile effort against such immense heat energy, And frankly, 475 00:24:32,880 --> 00:24:35,200 trying to cool a part of the Earth's mantle or 476 00:24:35,279 --> 00:24:40,279 mess with its core processes, that sounds like a profoundly bad. 477 00:24:40,039 --> 00:24:42,519 Speaker 1: Idea unintended consequences galore. 478 00:24:42,640 --> 00:24:46,920 Speaker 2: Absolutely, we don't fully understand the complex interconnected dynamics down there. 479 00:24:47,039 --> 00:24:51,759 A massive intervention could trigger other earthquakes, destabilize plates, affect climate, 480 00:24:51,799 --> 00:24:54,920 in ways we can't predict potentially far worse. 481 00:24:54,720 --> 00:24:57,839 Speaker 1: Outcomes, so intervention is off the table pretty much. 482 00:24:58,240 --> 00:25:00,519 Speaker 2: In this case. All we can really do is except 483 00:25:00,599 --> 00:25:03,880 that nature has its own plans, operating on a geological 484 00:25:03,880 --> 00:25:07,680 clock that just dwarfs human time scales. If the eruption 485 00:25:07,799 --> 00:25:10,440 happens tens or hundreds of thousands of years from now, 486 00:25:10,759 --> 00:25:13,720 maybe humanity will have figured something out by then, advanced 487 00:25:13,759 --> 00:25:16,480 technology waste to mitigate the effects we can't even dream 488 00:25:16,519 --> 00:25:16,920 of now. 489 00:25:17,039 --> 00:25:19,200 Speaker 1: Or maybe you will live on Mars by then, who knows. 490 00:25:19,480 --> 00:25:21,559 Speaker 2: But if not, then the only sensible path is to 491 00:25:21,599 --> 00:25:24,680 prepare for the consequences. Knowing we have a very, very 492 00:25:24,720 --> 00:25:29,079 long lead time. Our role now is vigilant observation, deep understanding, 493 00:25:29,599 --> 00:25:30,799 not intervention. 494 00:25:31,200 --> 00:25:34,200 Speaker 1: Okay, let's do it. Let's fast forward far, far into 495 00:25:34,200 --> 00:25:37,519 the future. Let's imagine that distant day finally arrives, The 496 00:25:37,519 --> 00:25:40,000 magma hit forty percent fill, the gases are bubbling, the 497 00:25:40,079 --> 00:25:44,240 pressure is unbearable. What happens. Paint that dramatic step by 498 00:25:44,279 --> 00:25:48,000 step picture for us. What does the world experience when 499 00:25:48,079 --> 00:25:49,720 Yellowstone finally blows again? 500 00:25:50,000 --> 00:25:54,799 Speaker 2: Okay, it begins with a huge global catastrophe initiated by 501 00:25:54,839 --> 00:25:59,160 a massive, large scale explosion, an eruption of such incredible 502 00:25:59,240 --> 00:26:02,960 velocity and power it would unleash atmospheric shockwaves. 503 00:26:03,039 --> 00:26:04,240 Speaker 1: Not a gentle start. 504 00:26:04,119 --> 00:26:07,400 Speaker 2: Not at all, incredibly violent, sudden release of all that 505 00:26:07,480 --> 00:26:11,160 pent up energy, accompanied by sonic booms that would literally 506 00:26:11,160 --> 00:26:14,279 deafen anyone nearby. In the ash, a gigantic amount of 507 00:26:14,319 --> 00:26:18,119 ash and pyroclastic material, far beyond anything humans have seen 508 00:26:18,119 --> 00:26:21,839 in recorded history. Immediately after that first blast, the sheer 509 00:26:21,960 --> 00:26:24,799 energy causes the Earth's crust right over the magma reservoir 510 00:26:24,880 --> 00:26:27,759 to just collapse inward, forming a giant called era. 511 00:26:27,960 --> 00:26:30,480 Speaker 1: These aren't small craters, right, We're talking miles. 512 00:26:30,079 --> 00:26:34,039 Speaker 2: Wide, dozens of miles wide, potentially formed maybe by multiple 513 00:26:34,079 --> 00:26:37,079 collapse events as the magma chamber below empties. 514 00:26:36,799 --> 00:26:39,319 Speaker 1: Right like you see in diagrams. Yeah, a massive basin 515 00:26:39,359 --> 00:26:40,799 where the ground just caves in. 516 00:26:41,039 --> 00:26:44,359 Speaker 2: Exactly, and the sheer force the sound of this natural 517 00:26:44,359 --> 00:26:47,799 disaster would be immense deafening. As I said, the blast 518 00:26:47,880 --> 00:26:53,759 wave itself, incredible rising ash, pummice, stone, superheated gases faster 519 00:26:53,839 --> 00:26:54,599 than the speed. 520 00:26:54,319 --> 00:26:56,960 Speaker 1: Of sound, supersonic shockwaves. 521 00:26:56,240 --> 00:27:01,440 Speaker 2: Flattening everything for hundreds of miles. Volcanic materials shot incredibly 522 00:27:01,519 --> 00:27:06,680 high stratosphere mesosphere within minutes, forming a colossal pillar of 523 00:27:06,759 --> 00:27:10,039 ash stretching miles into the sky, punching right through the 524 00:27:10,039 --> 00:27:12,720 normal weather layers into the upper atmosphere, and that spreads. 525 00:27:12,759 --> 00:27:17,240 It spreads rapidly, carried by powerful upper atmospheric winds, plunging 526 00:27:17,240 --> 00:27:21,200 a huge territory into darkness almost instantly closer to the ground, 527 00:27:21,240 --> 00:27:24,640 though it's even worse initially hou so those incandescent particles 528 00:27:24,640 --> 00:27:26,599 in the lower part of the column still red hot dense, 529 00:27:26,640 --> 00:27:29,559 they fall under their own weight. This heats the surrounding 530 00:27:29,559 --> 00:27:34,880 air to extreme suffocating temperatures, making it almost impossible to breathe, heat, 531 00:27:35,160 --> 00:27:37,359 choking ash. 532 00:27:36,519 --> 00:27:38,000 Speaker 1: And fire simultaneously. 533 00:27:38,079 --> 00:27:40,440 Speaker 2: Yes that hot pieces of pumice and ash set fire 534 00:27:40,480 --> 00:27:44,359 to everything. This superheated, fast moving mass then coalesces into 535 00:27:44,400 --> 00:27:45,839 pyroclastic flows. 536 00:27:45,960 --> 00:27:47,640 Speaker 1: The nightmare scenario for movies, but. 537 00:27:47,720 --> 00:27:52,000 Speaker 2: Real, devastating avalanches of hot gas and volcanic debris, traveling 538 00:27:52,160 --> 00:27:55,400 hundreds of miles per hour, temperatures of hundreds of degrees 539 00:27:55,440 --> 00:28:03,039 celsius and cinerating, burying everything. Forests, houses, rows, entire towns vaporized, carbonized, 540 00:28:03,119 --> 00:28:05,799 or buried under thick layers of rock. Formed from the 541 00:28:05,839 --> 00:28:07,440 floe called ignombrite. 542 00:28:07,480 --> 00:28:12,680 Speaker 1: Just immediate, unimaginable devastation. How do scientists even model something 543 00:28:12,759 --> 00:28:14,960 like that and how far could those flows reach? 544 00:28:15,200 --> 00:28:20,640 Speaker 2: It involves incredibly complex computer modeling, fluid dynamics, atmosphere physics, 545 00:28:20,759 --> 00:28:25,640 seismic simulations, combining geological data with supercomputers. They help predict 546 00:28:25,640 --> 00:28:29,599 the holocity, temperature spread. And yes, pyroclastic flows can travel 547 00:28:29,720 --> 00:28:32,119 hundreds of kilometers, even over hills and ridges. 548 00:28:32,240 --> 00:28:36,240 Speaker 1: So the immediate area is just gone uninhabitable for generation. 549 00:28:36,039 --> 00:28:38,839 Speaker 2: Utterly impassable. And of course no planes could fly anywhere 550 00:28:38,839 --> 00:28:41,119 near that. We already talked about ash and engines visibility 551 00:28:41,160 --> 00:28:43,920 would be zero anyway, A dark gray. 552 00:28:43,720 --> 00:28:45,200 Speaker 1: Hot cloud ground travel to. 553 00:28:45,359 --> 00:28:50,400 Speaker 2: Incredibly dangerous volcanic particles, melting tires, disabling engines, ash, burying roads, 554 00:28:50,440 --> 00:28:53,119 collapsing roofs under its weight just impossible. 555 00:28:53,400 --> 00:28:57,720 Speaker 1: But you mentioned the warning signs. That's the sliver of hope. 556 00:28:57,799 --> 00:29:00,960 Speaker 2: It's a critical sliver, yes, a test to the science. 557 00:29:01,680 --> 00:29:06,240 Thanks to the constant monitoring seismic GPS satellites gas sensors, 558 00:29:06,680 --> 00:29:09,799 scientists would likely know weeks, maybe months in advance that 559 00:29:09,880 --> 00:29:10,839 something major. 560 00:29:10,599 --> 00:29:13,440 Speaker 1: Was brewing, giving time for evacuation crucial time. 561 00:29:13,559 --> 00:29:16,559 Speaker 2: It would allow for organized, large scale evacuations from the 562 00:29:16,559 --> 00:29:20,960 immediate danger zones, potentially saving millions of lives. Even if 563 00:29:20,960 --> 00:29:23,880 the disaster scale is still immense and the affected area 564 00:29:23,920 --> 00:29:26,359 is vast. It wouldn't prevent the event, but it offers 565 00:29:26,359 --> 00:29:29,319 a chance to minimize the immediate human cost. That's why 566 00:29:29,319 --> 00:29:31,519 the monitoring is so vital, absolutely vital. 567 00:29:31,680 --> 00:29:35,799 Speaker 1: Okay, So the initial blast, the calder collapse, the pyroclastic flows, 568 00:29:36,079 --> 00:29:39,240 it's devastating. But then the ash column that had shot 569 00:29:39,279 --> 00:29:42,119 into space, what happens next? Is it just settled. 570 00:29:42,119 --> 00:29:44,880 Speaker 2: It doesn't just settle quickly. No, that massive column reaching 571 00:29:44,920 --> 00:29:47,920 the edge of space keeps expanding, propelled by jet streams 572 00:29:47,960 --> 00:29:51,799 atmospheric circulation high up. It forms this giant umbrella like 573 00:29:51,839 --> 00:29:55,240 cloud over Yellowstone, seating wider and wider, plunging a huge 574 00:29:55,279 --> 00:29:56,960 area into that hot darkness. 575 00:29:57,000 --> 00:29:58,319 Speaker 1: And then the fallout begins. 576 00:29:58,640 --> 00:30:01,559 Speaker 2: Within the first twenty four to seventy two hours, ash 577 00:30:01,599 --> 00:30:04,680 starts falling over most of the United States parts of Canada, 578 00:30:05,359 --> 00:30:08,920 blanketing vast regions could be inches, could be feet thick, 579 00:30:09,000 --> 00:30:10,359 depending on distance and wind. 580 00:30:10,480 --> 00:30:12,400 Speaker 1: And the consequences of that ash. 581 00:30:12,160 --> 00:30:16,160 Speaker 2: Falls severe knocking, out power lines under the weight, contaminating 582 00:30:16,240 --> 00:30:21,000 water bodies, rivers, lakes, destroying crops across huge agricultural areas, 583 00:30:21,039 --> 00:30:22,119 rendering them useless. 584 00:30:22,200 --> 00:30:23,359 Speaker 1: And then rain makes it worse. 585 00:30:23,599 --> 00:30:26,519 Speaker 2: Yes, then the rains come mixing with the fine ash, 586 00:30:26,640 --> 00:30:30,079 creating this heavy, abrasive gray mud, almost like what cement 587 00:30:30,160 --> 00:30:33,000 that falls to the ground. And crucially, this isn't just 588 00:30:33,119 --> 00:30:37,640 dirty mud, it's poisonous, poisonous. How the magma itself contains 589 00:30:37,640 --> 00:30:42,400 significant amounts of toxic heavy metals mercury, arsenic, lead, fluorine. 590 00:30:42,559 --> 00:30:45,440 These get incorporated into the ash. Oh wow, So these 591 00:30:45,480 --> 00:30:50,519 toxic mud flows poison rivers, lakes, groundwater, farmland, the air itself, 592 00:30:50,799 --> 00:30:54,160 making the environment incredibly hazardous for decades for all light. 593 00:30:54,240 --> 00:30:56,200 Speaker 1: And the volcano is still erupting this whole time. 594 00:30:56,359 --> 00:30:59,440 Speaker 2: It wouldn't be just one bang. The outbursts of magma 595 00:30:59,599 --> 00:31:03,240 ash pummice could continue for several weeks, maybe even a month, 596 00:31:03,599 --> 00:31:07,559 constantly feeding the cycle of destruction and pollution, pumping more 597 00:31:07,599 --> 00:31:09,440 and more material into the atmosphere. 598 00:31:09,480 --> 00:31:13,000 Speaker 1: And this is still just the beginning, isn't it? That 599 00:31:13,119 --> 00:31:16,680 immediate devastation is almost impossible to fully grasp. But then 600 00:31:16,759 --> 00:31:20,400 the long term global changes start unfolding, shaping the world 601 00:31:20,440 --> 00:31:24,400 for decades after. What happens once the eruption itself finally 602 00:31:24,480 --> 00:31:27,160 quiets down and the heavier ash starts. 603 00:31:26,839 --> 00:31:29,920 Speaker 2: To settle, That's when the volcanic winter really takes hold, 604 00:31:29,960 --> 00:31:32,240 and it's driven not just by the ash you can see, 605 00:31:32,240 --> 00:31:35,960 but by the invisible gases released sulfur dioxide. Right exactly, 606 00:31:36,319 --> 00:31:39,160 while the heavier ash particles fall out. Over weeks or months, 607 00:31:39,359 --> 00:31:43,240 the sulfur dioxide so two released, spreads throughout the upper 608 00:31:43,279 --> 00:31:46,880 atmosphere the stratosphere. Okay, there, it reacts with water, vapor, 609 00:31:46,960 --> 00:31:50,720 undergoes chemical changes, and forms tiny, highly reflective droplets of 610 00:31:50,720 --> 00:31:56,440 sulfuric acid, creating this persistent aerosol layer. Tiny particles, but billions. 611 00:31:56,079 --> 00:31:58,240 Speaker 1: Of them, so it's like a chemical haze high up. 612 00:31:58,400 --> 00:32:01,799 Speaker 2: Effectively, yes, all this material covers the entire planet like 613 00:32:01,839 --> 00:32:07,000 a veil, a stratospheric aerosol layer. This dense atmospheric cap 614 00:32:07,079 --> 00:32:10,839 is very effective at scattering and reflecting sunlight back into space. 615 00:32:10,640 --> 00:32:12,319 Speaker 1: Making it harder for sunlight to reach the. 616 00:32:12,240 --> 00:32:16,559 Speaker 2: Surface significantly harder, which in turn lowers the temperature of 617 00:32:16,559 --> 00:32:21,039 the Earth's surface globally, We're talking a sharp cooling several 618 00:32:21,079 --> 00:32:22,599 degrees celsius worldwide. 619 00:32:22,720 --> 00:32:24,240 Speaker 1: How much cooling are we talking. 620 00:32:24,039 --> 00:32:27,079 Speaker 2: Potentially five to ten degrees celsius drop in the global 621 00:32:27,079 --> 00:32:32,920 average temperature, which is truly catastrophic plunge Climatologically, These events 622 00:32:32,960 --> 00:32:36,759 would also profoundly mess with global weather patterns ocean currents, 623 00:32:36,960 --> 00:32:40,880 creating unpredictable extreme climate anomalies everywhere. 624 00:32:41,119 --> 00:32:45,160 Speaker 1: A sharp cooling of several degrees sounds maybe minor on paper, 625 00:32:45,200 --> 00:32:48,720 but for earth systems. For agriculture, that's absolutely devastating, isn't. 626 00:32:48,720 --> 00:32:51,119 It's not just feeling colder, it's a complete disruption of 627 00:32:51,160 --> 00:32:52,000 life support. 628 00:32:51,799 --> 00:32:55,680 Speaker 2: Absolutely catastrophic. Even a few degrees drop globally has profound 629 00:32:55,720 --> 00:32:59,759 cascading impacts. Farmers lose massive amounts of crops, not just 630 00:32:59,759 --> 00:33:02,440 from the ash and toxicity, but now from prolonged lack 631 00:33:02,480 --> 00:33:06,440 of sunlight, changed rainfall, dramatically colder temperatures. It's leading to 632 00:33:06,640 --> 00:33:11,599 widespread agricultural collapse, food supply chains broken across continents, food 633 00:33:11,599 --> 00:33:16,119 prices with skyrocket hyperinflation. National economies would just falter and 634 00:33:16,160 --> 00:33:19,599 collapse under the strain. It's highly probable a famine sweeping 635 00:33:19,640 --> 00:33:22,759 the planet, not just from lack of production, but inability 636 00:33:22,799 --> 00:33:27,160 to distribute what little food remains. Fractured transport borders likely 637 00:33:27,240 --> 00:33:28,319 closing in self. 638 00:33:28,119 --> 00:33:29,880 Speaker 1: Preservation and society itself. 639 00:33:29,960 --> 00:33:36,359 Speaker 2: Without stable food economies, basic infrastructure, human civilization could easily 640 00:33:36,440 --> 00:33:41,640 plunge into profound chaos. Widespread social unrest, mass migrations of 641 00:33:41,720 --> 00:33:45,039 environmental refugees, resource conflicts. 642 00:33:44,559 --> 00:33:48,480 Speaker 1: The psychological toll, prolonged darkness, cold, constant. 643 00:33:48,119 --> 00:33:52,079 Speaker 2: Struggle, immense testing, the very fabric of society, breakdown of 644 00:33:52,079 --> 00:33:56,759 government's international cooperation are real risk. The focus shifts entirely 645 00:33:56,799 --> 00:33:57,799 to local survival. 646 00:33:57,960 --> 00:33:59,519 Speaker 1: So what does this all mean for humanity in the 647 00:33:59,559 --> 00:34:01,680 long run? Now? How long does the volcanic winter last? 648 00:34:01,680 --> 00:34:02,839 Do we ever get back to normal? 649 00:34:03,079 --> 00:34:05,920 Speaker 2: Well, the good news, relatively speaking, is it's not an 650 00:34:05,920 --> 00:34:09,119 eternal winter, but it is a very long one. After 651 00:34:09,199 --> 00:34:12,800 a few years, maybe three to five, global temperatures would 652 00:34:12,800 --> 00:34:17,119 start to slowly rise again as those atmospheric aerosols gradually 653 00:34:17,159 --> 00:34:19,079 dissipate get washed out by rain. 654 00:34:19,159 --> 00:34:20,760 Speaker 1: OHK system recovery begins. 655 00:34:20,920 --> 00:34:23,320 Speaker 2: Yes, but it would take a significant amount of time, 656 00:34:23,400 --> 00:34:26,239 at least a couple of decades, maybe much longer, for 657 00:34:26,320 --> 00:34:30,199 temperatures and climate patterns to return to the pre eruption standards. 658 00:34:30,199 --> 00:34:33,880 Ecosystems would take even longer centuries perhaps. 659 00:34:33,480 --> 00:34:36,000 Speaker 1: And humanity's fate do we make it. 660 00:34:36,000 --> 00:34:38,320 Speaker 2: It's not an extinction event in the sense of wiping 661 00:34:38,400 --> 00:34:42,800 us out completely. We would survive. Humans are incredibly adaptable, resilient, 662 00:34:43,119 --> 00:34:46,679 but the world we knew before God, we'd have to rebuild, completely, 663 00:34:46,719 --> 00:34:51,480 rebuild our civilization, not just physically, buildings, infrastructure, but socially, economically, 664 00:34:51,519 --> 00:34:59,000 maybe even spiritually, a monumental undertaking, requiring unprecedented global cooperation, resourcefulness, resilience, 665 00:34:59,440 --> 00:35:02,800 just to reassess, dablish stable society's food production, everything in 666 00:35:02,840 --> 00:35:06,199 a radically altered world. It would fundamentally reshape what it 667 00:35:06,239 --> 00:35:09,159 means to be human on this planet. Hashtag t hashtag outroar. 668 00:35:09,360 --> 00:35:13,599 Speaker 1: Wow. We have taken quite a deep dive today into 669 00:35:13,639 --> 00:35:17,880 the incredible power simmering beneath the Yellowstone from pinpointing that 670 00:35:17,920 --> 00:35:23,199 most volatile reservoir, understanding the immense timeline to the staggering 671 00:35:23,239 --> 00:35:26,079 global consequences of a supereruption. 672 00:35:26,559 --> 00:35:27,559 Speaker 2: It really is humbling. 673 00:35:27,880 --> 00:35:31,639 Speaker 1: It is a humbling reminder of Earth's immense, often terrifying 674 00:35:31,760 --> 00:35:35,159 natural forces, how small we are really in the face 675 00:35:35,159 --> 00:35:38,719 of them, but also a testament to human ingenuity, isn't 676 00:35:38,760 --> 00:35:41,199 it deciphering these planetary secrets? 677 00:35:41,280 --> 00:35:44,639 Speaker 2: Indeed, But it's crucial to remember that long timeframe we 678 00:35:44,719 --> 00:35:47,880 talked about, tens hundreds of thousands of years. Keep that 679 00:35:47,960 --> 00:35:49,440 geological perspective right. 680 00:35:49,519 --> 00:35:51,159 Speaker 1: It's not tomorrow's problem exactly. 681 00:35:51,360 --> 00:35:54,320 Speaker 2: While the scale is immense for the foreseeable future, nothing 682 00:35:54,360 --> 00:35:56,559 depends on us in terms of triggering or preventing it. 683 00:35:57,119 --> 00:36:01,960 Our role is steady understanding, preparedness, not fear necessarily. 684 00:36:02,039 --> 00:36:04,920 Speaker 1: So what does this all mean for you listening right now? Well, 685 00:36:04,960 --> 00:36:08,360 perhaps it's just a profound reminder to appreciate every single day, 686 00:36:08,840 --> 00:36:11,440 to be grateful for the relative stability, the abundance we 687 00:36:11,480 --> 00:36:12,360 often take for granted. 688 00:36:12,440 --> 00:36:14,559 Speaker 2: That's a great takeaway, and maybe. 689 00:36:14,400 --> 00:36:17,280 Speaker 1: To recognize the inherent value in supporting and helping each 690 00:36:17,320 --> 00:36:22,519 other whenever we can, because ultimately, our collective survival through 691 00:36:22,559 --> 00:36:26,199 any challenge, big or small, natural or otherwise, it comes 692 00:36:26,199 --> 00:36:29,199 down to our ability to connect, adapt, cooperate. 693 00:36:29,360 --> 00:36:33,159 Speaker 2: That's a truly profound point our long term future, whether 694 00:36:33,239 --> 00:36:36,639 facing a hypothetical volcanic winter millennia from now or the 695 00:36:36,679 --> 00:36:39,800 more immediate challenges we face today, it really hinges on 696 00:36:39,880 --> 00:36:43,760 that collective resilience, Our innovation, yes, but also our commitment 697 00:36:43,800 --> 00:36:45,320 to supporting and caring for each. 698 00:36:45,199 --> 00:36:47,159 Speaker 1: Other community shared humanity. 699 00:36:47,239 --> 00:36:49,599 Speaker 2: That's the most fundamental guarantee that we won't just survive, 700 00:36:49,679 --> 00:36:51,599 but will thrive in the long run. 701 00:36:51,760 --> 00:36:56,320 Speaker 1: This deep dive into Yellowstone's hidden heartbeat, it reveals nature's 702 00:36:56,320 --> 00:37:00,519 immense power, our planet's long, dynamic history, and it really 703 00:37:00,599 --> 00:37:03,599 makes you wonder, doesn't it. If humanity does survive such 704 00:37:03,639 --> 00:37:06,400 an event thousands of years from now and has to 705 00:37:06,480 --> 00:37:10,000 rebuild from scratch, maybe in a world of prolonged twilight 706 00:37:10,039 --> 00:37:14,519 altered landscapes, what fundamental aspects of our current civilization would 707 00:37:14,559 --> 00:37:17,920 be prioritize. What lessons from today would we carry forward? 708 00:37:18,000 --> 00:37:21,199 Is absolutely essential? And what would we choose to consciously 709 00:37:21,280 --> 00:37:23,320 leave behind in the ashes of the old world. 710 00:37:23,599 --> 00:37:25,639 Speaker 2: That is something truly profound to ponder 711 00:37:25,880 --> 00:37:27,519 Speaker 1: Something to think about as you look up at the 712 00:37:27,519 --> 00:37:30,880 sky wherever you are, and maybe contemplate those silent, powerful 713 00:37:30,920 --> 00:37:32,239 forces right beneath our feet.