That Time the Earth Almost Suffocated

Scientists may have figured out what caused a potential mass extinction over half a billion years ago and separately discovered a live animal that we had only known about through fossils Hosted by: Hank Green This video was sponsored by Wren. SciShow is on TikTok Check us out at Support SciShow by becoming a patron on Patreon: Huge thanks go to the following Patreon supporters for helping us keep SciShow free for everyone forever: Matt Curls, Alisa Sherbow, Dr. Melvin Sanicas, Harrison Mills, Adam Brainard, Chris Peters, charles george, Piya Shedden, Alex Hackman, Christopher R, Boucher, Jeffrey Mckishen, Ash, Silas Emrys, Eric Jensen, Kevin Bealer, Jason A Saslow, Tom Mosner, Tomás Lagos González, Jacob, Christoph Schwanke, Sam Lutfi, Bryan Cloer Looking for SciShow elsewhere on the internet SciShow Tangents Podcast: Facebook: Twitter: Instagram: , SciShow, science, education Sources: Images: