The primary means of energy generation is going to solar. It will at least be a plurality, and probably be a slight majority in the long term.

I think we are at the dawn of a new era in commercial space exploration.

Biofuels such as ethanol require enormous amounts of cropland and end up displacing either food crops or natural wilderness, neither of which is good.

In almost any industry, if you're passionate about doing a great job and making people that buy your product or service as happy as possible, it's really fulfilling.

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

The odds of me coming into the rocket business, not knowing anything about rockets, not having ever built anything, I mean, I would have to be insane if I thought the odds were in my favor.

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.