 Well, to me it seems sciences are among the most exciting things we could be thinking about these days. Scientists are discovering so many fascinating things, partly because we have new tools. The industrial and entertainment revolutions have given us microelectronics, computers, micro manipulators, tiny things that you can pretty much make anything you can imagine. So the rate of scientific progress is staggering these days and we can be participants in it. That's just so rewarding to be discovering the secrets of the universe. The secrets far away, the secrets close to home, the secrets inside the cells of our own bodies. Knowing that you're contributing to the future of mankind and our ability to survive and live well on this planet for a long time, all of those matter to me and I think they're exciting to people in general.