In this episode, Katie Mack and John Green discuss why life was able to happen. 

Head to https://policygenius.com/crashcourse to get your free life insurance quotes and see how much you could save. 

This show is a production of Complexly. If you want to help keep Crash Course free for everyone, forever, you can join our community on Patreon at http://www.patreon.com/crashcourse

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