How do we know chimpanzees are our closest primate cousins? Are we more like mushrooms or melons? And what's the deal with protists? When Darwin sketched the first evolutionary tree over a hundred years ago with the note "I think..." scribbled next to it, he had no idea that he was giving humankind a powerful tool to answer questions like these. In this class, you'll learn how biologists make and use these trees to understand the rich complexity of life.

We're locked in an arms race that's been going on for millions of years and the scars of war are written all over our DNA. Is the end near? Who will win? Come join us on our exploration of conflict in the history of life.