We are just a speck, on a speck, orbiting a speck, in the corner of a speck, in the middle of nowhere..

There's nothing I believe in more strongly than getting young people interested in science and engineering, for a better tomorrow, for all humankind..

You and I are made of stardust. We are the stuff of exploded stars. We are therefore, at least 1 way that the Universe knows itself. That, to me, is ….

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

Science is the best thing humans beings have ever come up with. And if it isn't, science will fix it..

The more you find out about the world, the more opportunities there are to laugh at it..

To leave the world better than you found it, sometimes you have to pick up other people's trash..

The most serious problem facing humankind is climate change. All of these people breathing and burning our atmosphere has led to an extraordinarily d….

There really is no such thing as race. We all came from Africa. We are all of the same stardust. We are all going to live and die on the same planet,….

Apparently there is redundancy in memory: You store the same memory in different parts of your brain for accessing at different speeds. That speed wo….

Evolution is one of the most powerful and important ideas ever developed in the history of science. Every question it raises leads to new answers, ne….

People confuse the word cynicism with the word skepticism. One is “you’re not gonna pay attention to anything, think everything’s screwed up, nothing….

The most serious problem facing humankind is climate change..

The thing about a theory in science is it allows you make predictions. Evolutionary theory allows us to predict what apples will taste good next harv….

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 ….

The Big Bang banged, and for some reason we’re here. And that’s astonishing. And that we can understand that, that’s the most astonishing..

Reading their letters and the First Amendment of the US Constitution, I infer that this nation's founders noted that religions have been at the cente….

That's what makes a human a human, if we store information outside our bodies..

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

I meet so many people who are intimidated by arithmetic..

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