Bering Glacier Lake, AK

Paleontologist Kirk Johnson explores the dynamic history—and future—of ice at the poles. (Aired February 5, 2020)

Official Website: https://to.pbs.org/3EUn0KC | #novapbs

In this two-hour special, renowned paleontologist Kirk Johnson takes us on an epic adventure through time at the polar extremes of our planet. Following a trail of strange fossils found in all the wrong places—beech trees in Antarctica, hippo-like mammals in the Arctic—Johnson uncovers the bizarre history of the poles, from miles-high ice sheets to warm polar forests teeming with life. What caused such dramatic changes at the ends of the Earth? And what can the past reveal about our planet’s climate today—and in the future?

Chapters
00:00:00 Introduction
00:05:49 Hunting for Fossils on Islands near the North and South Poles
00:22:52 Fossil of New Dinosaur Species Found in Patagonia
00:29:04 Was Death Valley Always the Hottest Place on the Planet?
00:37:32 How Have Carbon Dioxide Levels Changed on Earth Over Time?
00:49:18 How Do Ice Sheets Form in Antarctica
00:56:47 How Did Life Persist Through the Ice Age?
01:11:29 Impacts of Rising Temperatures on Ice Cycles of the Planet
01:31:30 What Was the Warm World Like Before the Ice Age
01:43:04 This Cave Has Been Frozen for 100,000 Years
01:50:30 Conclusion

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Join us on our Journey here: https://goo.gl/RwyFSe

In this episode we head back out to the Knik Glacier to fly over and get some awesome footage, along with popping into the same strip we tried to land at in episode 3 and getting out for a short little hike! Plus Jon gets a little landing practice with the 170 for the first time in a long time!

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