Everybody remembers numbers and computers remember numbers. People remember procedures and computers certainly remember procedures. But the other thing that's still important is that your perception as a human is affected subtly by all this stuff that you can't quite articulate. You run your life according to all this stuff that's happened to you. All of your memories affect everything you do whereas with a computer, there's adaptive software and things, but it's more literal.

The theory of evolution was not formally published until shortly before Faraday's death. Evolution was yet to be discovered during Faraday's life. Also, I don't think that Michael Faraday would claim that the Earth is extraordinarily young.

If the Earth gets hit by an asteroid, it's game over. It's control-alt-delete for civilization.

Science is the best idea humans have ever had. The more people who embrace that idea, the better.

The philosophy of science is inherent in the process. This is to say, you think critically, you draw a conclusion based on evidence, but we all pursue discovery based on our observations. That's where science starts.

If NASA is to reach beyond the Moon and someday reach Mars, it must be relieved of the burden of launching people and cargo to low earth orbit. To do that, we must invest more in commercial spaceflight.

Climate change is a real deal. So, hey deniers - cut it out, and let's get to work.