There's a difference between being able to make long distance phone calls cheaper on the Internet and walking around Riyadh with a PDA where you can have all of Google in your pocket. It's a difference in degree that's so enormous it becomes a difference in kind.

Obviously China is clearly taking the lead in some areas, but when it comes to the most advanced innovation, it's still America.

I think the Arab awakening has changed everything and I think a lot will depend on what people there ask of us, may be nothing, it may be a lot. I think that really depends how they find their voice and what they see as their real interest, and hopefully that would be for more schools and not more tanks.

I'm from Minnesota. I'm optimistic. I mean, that's just who I am.

American young people have got to understand from an early age that the world pays off on results, not on effort. Not everyone should win a prize no matter where he or she finishes.

That's right-the striking thing about greenhouse gases is the diversity of sources that emit them. A herd of cattle belching can be worse than highway full of hummers.

It created a global platform that allowed more people to plug and play, collaborate and compete, share knowledge and share work, than anything we have ever seen in the history of the world.