Incidentally, the creationists that I've encountered diligently deny that our Earth's climate is being altered by people. This point of view and teaching is in absolutely no one's best interest. Here's hoping we can work together and preserve the Earth, for us - us humans.

The meaning of life is pretty clear: Living things strive to pass their genes into the future. The claim that we would not have morals or ethics without religion is extraordinary. Animals in nature seem to behave in moral ways without organized religion.

But as the cerebellum degrades with age, so does the quality of memories. The memories are there, but they're not as good.

Evolution is a theory, and it's a theory that you can test. We've tested evolution in many ways. You can't present good evidence that says evolution is not a fact.

Everyone, red state, blue state, everyone supports space exploration.

You stop planetary exploration, those people who do that extraordinary work are going to have to go do something else.

But investment in space stimulates society, it stimulates it economically, it stimulates it intellectually, and it gives us all passion.