One of the reasons the United States has actually been reducing its emissions in recent years is actually that there's been a boom in natural gas. It's displacing coal. It emits less carbon dioxide when you burn it. This is not really an Obama policy. It's just something that happened because of technology and the free market.

The Obama administration kind of shows how you can use diplomacy to bring the most important countries together and get the whole world on board.

We apply fight-or-flight reflexes not only to predators, but to data itself.

The obvious reductio ad absurdum is Holocaust deniers: Should their perspective be provided, for "balance," any time someone writes about the Holocaust?

I think, domestically, one of the most interesting things that you would see under Presidenr Hillary Clinton is going to be the big energy infrastructure transition.

Globally, you're seeing a big, big trend towards large installations of renewable energies across the world. You are going to see huge installations of wind and solar in places like Africa. These things are going to happen no matter what. They're going to happen for largely non-policy free market reasons even in the United States.

I think that the world will continue trying to grapple with the climate problem, no matter who is U.S. president. But I think that, depending on who that president is, it can have a significant influence on the trajectory.