The Evolutionary Epic: Crash Course Big Story #5

In which John Green, Hank Green and Emily Graslie talk to you about evolution. So over the last 3.8 billion years, life on Earth has evolved from single-celled prokaryotes to the dizzying array of life we know today. So how did this all happen? We'll talk about Darwin, evolution, natural selection, and how we got from there to here, and then and now.

Learn more here: http://www.bighistoryproject.com

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