UV is bad for molecules because its high energy breaks the bonds between a molecule's constituent atoms. That's why UV is bad for you, too: it's always best to avoid things that decompose the molecules of your flesh.

Down there between our legs, it's like an entertainment complex in the middle of a sewage system. Who designed that?

I wake up and I go to work. I don't look for the cup of coffee. The universe is enough of a draw for me - to awaken me and have me bound out of bed and go to my office.

For decades, we've been trying to cook up the building blocks of life, in the lab, and recreate the origins of it all, but the parts didn't seem to fit together, until now.

Grab something off the shelf that's on the spaceship-an ashtray, it doesn't matter what. Because I can tell you, if they flew here from another galaxy, no matter what you've pulled off the shelf, it'll be unlike anything we have on Earth.

The first colony on Mars is not going to be built by a private company. How are you going to make money? You're not.

I'd like to live in a world where people embrace objective truths rather than be offended by them.