When we face a choice between adding features and resolving security issues, we need to choose security.

It's the poorer people in tropical zones who will get really hit by climate change - as well as some ecosystems, which nobody wants to see disappear.

I love nuclear. It does this radiation thing that's tricky. But they're good solutions. You know, it was interesting; recently, in Connecticut this natural gas plant blew up 11 guys. It just blew them up.

People are using Windows PCs more than they watch TV now.

The world today has 6.8 billion people...that's headed up to about 9 billion. If we do a really great job on vaccines, health care, reproductive health services, we could lower that by perhaps 10 to 15 percent.

The first five years have so much to do with how the next 80 turn out.

Flying cars are not a very efficient way to move things from one point to another.