 Well, when I was a child, I was read to by my parents from biographies of Galileo and Darwin. When I was about eight, we went down to see the Museum of Natural History in New York City, and we saw the Planetarium Show, and we saw the Dinosaur Bones, and saw the displays about volcanoes, and well, not all that much was known, but a little bit was known, and it was very tempting. So I thought, that's the coolest stuff. Now, I didn't know what a scientist really did, even though my father was a scientist. I was only eight years old, so I just thought this is really cool stuff. I wanted to know more, and so I got to continue, and I read all the science books that were available for third, fourth, fifth, sixth graders. I started playing with things and buying small lenses from Edmund Scientific, so I could make my telescope in a cardboard tube, and started to learn stuff. And so I got to pursue this, and it kept on growing until I got to be really, really interested in it. So then I went to college and graduate school, and I still am doing it.