Earth’s Greatest Mysteries, Explained

Support us on Patreon:   / membership   00:00 Countdown 00:05 What If All of Antarctica's Ice Suddenly Melted? 18:01 What Was Earth Like 2 Billion Years Ago? 48:11 What If the Sahara Desert Suddenly Turned Green? 01:03:41 What If the Dinosaur-Killing Asteroid Struck Earth in 2024? 01:12:31 What If You Lived During The Permian Period? 01:28:43 What Was Earth Like in the Age of Giant Insects? 01:36:37 8 Ancient Animals Scarier Than Dinosaurs Check out our other channels: How to Survive: https://bit.ly/how-to-survive-show Aperture: https://bit.ly/aperture-show T-shirts and merch: http://bit.ly/whatifstore What If elsewhere: Instagram: http://bit.ly/whatif-instagram Discord:   / discord   Podcast: http://bit.ly/yt-what-if-show-podcast What If is a mini-documentary web series that takes you on an epic journey through hypothetical worlds and possibilities. Join us on an imaginary adventure through time, space and chance while we (hopefully) boil down complex subjects in a fun and entertaining way. Contact us at https://underknown.com/contact/ #whatif #spacefactsthatwillfreakyouout #cosmos #mystery