Andrew Sullivan

Al Gore's problem, in my view, is that he never liked politics. He's actually deeply uncomfortable in it but felt he had to do it because of his father. He's much more comfortable in a private sector role and has, in fact, been much more successful in a private sector role, and I admire him for that.

I had an instinctive feeling that the people who have little or no school training should have something coming into their homes weekly which dealt with their problems in a simple, helpful way... so I wrote in a plain, common-sense way on the things that concerned our people.

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.