00:00The last time Yellowstone erupted, it buried half of North America under ash.
00:05That was 640,000 years ago.
00:08If it happened today, the eruption column would reach 50 kilometers into the stratosphere.
00:14Every aircraft worldwide would be grounded within hours.
00:18The ash destroys jet engines.
00:21Within 48 hours, 10 centimeters of ash would cover every surface within 1,500 kilometers.
00:28Roads, power lines, crops, everything.
00:32Then, the temperature drops.
00:34Yellowstone ash in the stratosphere blocks enough sunlight to lower global temperatures by 5 to 10 degrees for 3 to
00:415 years.
00:42Crops fail in the first season.
00:44Then, the second.
00:45Then, the third.
00:461 billion people face food shortages.
00:49Not from the eruption.
00:50From the volcanic winter it leaves behind.
00:53The eruption lasts days.
00:55The aftermath lasts decades.
00:57Yellowstone may not erupt for another 100,000 years.
01:01But every country on earth would feel it.
01:03That is what sits under a national park.
01:05What do you think?
01:06What are the stretches of Pikال feet?
01:06What do you think?
01:07What kind of Almond Bla�� means to the restroom in the ground number?
01:07You have one country on earth.