95, 96 percent of all that drives the universe has no known origin.

Before we start talking about genetic differences, you gotta come up with a system where there's equal opportunity.

That's the point, to get the people who wouldn't otherwise think to eavesdrop on a conversation that involves science.

I see myself in pop culture. I listen to pop music, I do pop things, and I'm also a scientist.

Photography is a form of time travel.

There are as many atoms in each molecule of your DNA as there are stars in the typical galaxy. This is true for dogs, and bears, and every living thing. We are, each of us, a little universe.

The world, I think, has too many late-night talk shows.