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

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

Evolution is not something you can believe in or not believe in like do you believe in gravity.

Researchers have proven that scientifically, that all humans are one people

I tell personal stories associated with aspects of the theory, and I hope they are interesting and compelling. I don't feel you're going to change a grownup's mind in one reading. People have to be exposed to scientific ideas over and over again for years. It's also not a textbook.

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

You start doing the addictive behavior to feel good and then your receptors get overloaded with dopamine, then you stop doing the addictive thing and some of the receptors have shut down and you don't have enough dopamine to feel good. So then you feel bad and go back to the addictive behavior to get more dopamine. The strange thing is that it works with what we think of as uppers and downers and whatever you call gambling - sidewaysers.