In ninth grade, I came up with a new form of rebellion. I hadn't been getting good grades, but I decided to get all A's without taking a book home. I didn't go to math class, because I knew enough and had read ahead, and I placed within the top 10 people in the nation on an aptitude exam.

The computer will live your life, listen to you and understand you better than humans can.

The part of uranium that's fissile - when you hit it with a neutron, it splits in two - is about 0.7%. The reactors we have today are burning that 0.7%.

The fight against AIDS in China is already well underway. The Chinese government and other funders are providing major support, and they'll continue to bear primary responsibility for delivering prevention and treatment.

I think there certainly was a milestone in the '90s with regards to the Internet achieving critical mass. There were several magical factors that came together: the creation of HTML by Tim Berners-Lee, the drop in the price of communications, and all the PCs out there that you could put this software into.

We have to find a way to make the aspects of capitalism that serve wealthier people serve poorer people as well.

Two years from now, spam will be solved.