You could warm Mars up, over time, with greenhouse gases.

The reality is gas prices should be much more expensive then they are because we're not incorporating the true damage to the environment and the hidden costs of mining oil and transporting it to the U.S. Whenever you have an unpriced externality, you have a bit of a market failure, to the degree that eternality remains unpriced.

There's a fundamental difference, if you sort of look into the future, between a humanity that is a space-faring civilization, that's out there exploring the stars...compared with one where we are forever confined to Earth until some eventual extinction event.

People work better when they know what the goal is and why. It is important that people look forward to coming to work in the morning and enjoy working.

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

My vision is for a fully reusable rocket transport system between Earth and Mars that is able to re-fuel on Mars - this is very important - so you don't have to carry the return fuel when you go there.

I don't think very highly of Henrik Fisker. [...H]e thinks the reason we don't have electric cars is for lack of styling