How Do We Know How Old the Earth Is

In the wake of World War 2, Clair Patterson embarked on a scientific quest to find out how old the Earth really is. His hard work paid off, but it also revealed a modern danger. Hosted by: Reid Reimers 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: Adam Brainard, Alex Hackman, Ash, Bryan Cloer, charles george, Chris Mackey, Chris Peters, Christoph Schwanke, Christopher R Boucher, Eric Jensen, Harrison Mills, Jaap Westera, Jason A, Saslow, Jeffrey Mckishen, Jeremy Mattern, Kevin Bealer, Matt Curls, Michelle Dove, Piya Shedden, Rizwan Kassim, Sam Lutfi Looking for SciShow elsewhere on the internet SciShow Tangents Podcast: TikTok: Twitter: Instagram: Facebook: , SciShow, science, education, learning, complexly Sources