Sharks are being driven to extinction because people want to eat their fins and their flesh.

I remember being in strong physics, physiology and biology classes.

I think becoming a scientist is the product of parents who gave me enormous opportunities to master nature.

Human technology has made it to Mars. We are transmitting gorgeous pictures from it. Yet we have not explored our own planet. Two-thirds of it is covered with oceans that are still mysterious places.

Marriage is really an exciting adventure.

The first trip I remember taking was on the train from Virginia up to New York City, watching the summertime countryside rolling past the window. They used white linen tablecloths in the dining car in those days, and real silver. I love trains to this day. Maybe that was the beginning of my fixation with leisurely modes of travel.

I got to travel around Anbar Province, had a great group of Marines who worked for me who traveled around Anbar Province. I got to hang out with a lot of different types of Marines and soldiers and sailors.

I grew up playing golf, and if I were ever good enough to play professionally, I would get to travel the world while playing a sport I love.