Ep. 2: Why We Can Exist

"That’s why we’re here. Something broke."
Head to policygenius.com/crashcourse to get your free life insurance quotes and see how much you could save.

In episode 2 of their journey through the history of the universe, Dr. Katie Mack and John Green discuss the fundamental forces of nature, the tiny ovens we know as particle colliders, and how we all can exist.
See Privacy Policy at art19.com/privacy and California Privacy Notice at art19.com/privacy#do-not-sell-my-info.