James Harden

That excitement on the court, I'm the same way off the court. I like to have fun, meet people; I like to give high-fives to the kids courtside. Just have fun. That's kind of my personality, that's how I've been.

I heard a lot of those things. I heard that I was greedy; that I didn't care about winning; heard the questioning of my loyalty. And I'm thinking: 'Of course I want to win. I've been winning my entire life.'

Supplying fuel for a Mars expedition from the lunar surface is often suggested, but it's hard to make it pay off - Moon bases are expensive, and just buying more rockets to launch fuel from Earth is relatively cheap.