When I was a child, I wanted to be a “lady archaeologist”. We went to Mesa Verde National Park many times on family vacations, and I thought the archaeology there was just wonderful. One of the big mysteries of the Mesa Verde ruins is where the people went; they had a tough couple of decades with drought, inter-tribal warfare and even cannibalism... Then, after 1,300 years or so, they all left. Where did they go? I thought it would be great to find out – form a hypothesis and then dig out the proof. And I suppose that’s what really got me thinking about being a scientist.