That's when the vast consensus of the world's climatologists, brought together by the UN and The Intergovernmental Panel on Climate Change, really announced that this was going on, and since then the accumulation of data and wickedly hot years has served to only congeal that consensus much more firmly.

I think that it is impossible to think of a threat to social justice greater than what we are doing to the earth's atmosphere at the moment.

It's much to the credit of the rest of the world that they have gone ahead and tried to do the Kyoto accords on their own. It makes it unbelievably difficult to do that, for a variety of economic and regulatory reasons, without the participation of the biggest energy user in the world.

The fact that Washington has been a complete logjam for anything for the last six years has got to change because we need to have federal policy that really allows us to move quickly and nimbly.

We'd like to get the fossil fuel industry on the back foot for a while, having to deal with us.

The idea that China and India will just abandon climate action is not true, because they're doing it for more reasons than we are.

Everything that the administration has done has been counterproductive.