Head to http://actnow.climeworks.com/besmart and learn more about removing CO₂ from the air. ↓↓↓ More info and sources below ↓↓↓ One day around 15,000 years ago, a wall of ice 2,000 feet tall and 30 miles wide suddenly broke wide open, and it unleashed the largest flood that we know of in the history of Earth. Come and hit the road with me as we search for the geologic fingerprints of the Missoula Ice Age Floods, and learn the story of one of the worst natural disasters that’s ever happened! High fives to Nick Zentner for educating me on the geology of Eastern Washington. He makes incredible geology videos on YouTUbe: null https://www.youtube.com/watch?v=qHaL04gZQwc Follow me to @PBS Eons for more Kallie and more prehistoric adventures: null SUBSCRIBE so you don’t miss a video! ►► http://bit.ly/iotbs_sub We’re on PATREON! Join the community https://www.patreon.com/itsokaytobesmart ----------- High fives to all our Brain Trust Patrons: NullBlox.ZachryWilsn paul andre bouis Mark Littlehale Ali Freiburger Mehdi Damou Barbora Bei Ken Board Attila Pix Burt Humburg Roy Lasris dani bowman David Johnston Salih Arslan Baerbel Winkler Robert Young Eric Meer Dustin Karen Haskell Join us on Patreon! https://patreon.com/itsokaytobesmart Twitter http://www.twitter.com/DrJoeHanson http://www.twitter.com/okaytobesmart Instagram http://www.instagram.com/DrJoeHanson http://www.instagram.com/okaytobesmart Merch null Facebook https://www.facebook.com/itsokaytobesmartpbs/ 00:00 Introduction 00:54 A geologic mystery 01:53 A very large lake 03:32 A mountain made of ice 05:15 The dam breaks 06:25 Biggest. Waterfall. Ever. 07:57 How the damage was done 10:10 Witnesses to destruction 10:49 A brave new idea 12:00 Stay curious.