What most people know but don't realize they know is that the world is almost entirely solar-powered already. If the sun wasn't there, we'd be a frozen ice ball at three degrees Kelvin, and the sun powers the entire system of precipitation. The whole ecosystem is solar-powered.

I realized that a methane-oxygen rocket engine could achieve a specific impulse greater than 380.

I'm personally a moderate and a registered independent, so I'm not strongly Democratic or strongly Republican.

I'm a Silicon Valley guy. I just think people from Silicon Valley can do anything.

I tend to approach things from a physics framework. And physics teaches you to reason from first principles rather than by analogy.

The reason we should do a carbon tax is because it's the right thing to do. It's economics 101, elementary stuff.

No I don't ever give up. I would have to be dead or completely incapacitated