Musicals are hard for me because I got thrown out of the glee club in high school, because I couldn't sing in tune at the time. I can sing in tune now, but I have to work really hard on it to make sure that I don't exercise one of my great talents, which is the ability to sing in three keys at the same time.

In 2003, I almost died of an intestinal blockage when I was on a mountain in Chile, filming a segment for 'Scientific American Frontiers.'

Jean Paul Sartre says in "No Exit" that hell is other people. Well, our task in life is to make it heaven. Or at least earth.

Originality is unexplored territory. You get there by carrying a canoe - you can't take a taxi.

I'm in this wonderful position where I can do what interests me. And whatever comes along that interests me, I do. The rest of the time I bother scientists about communicating.

As I am becoming older, the only thing that speeds up is time.

People who laugh together generally don't kill each other.