In this lesson, Siena explains the key events from the Jurassic period to present day and offers a gloomy prediction of our future (2012 we hope not!).

As a preface, let me state that this was entirely unprompted. Siena asked me if I wanted to hear “a scary story.” I said yes. She asked, “Which one?” I didn’t realize she knew more than one (or zero for that matter), so I asked her to pick one. But I asked her to wait until I got the camera. So this was the first time we’ve ever heard this story.