The laws of Congress and the laws of physics have grown increasingly divergent, and the laws of physics are not likely to yield.

The polling data shows not an unbelievable level of concern [on climate issue] but a general awareness of this problem. And now I think it's up to all sorts of people who really care about these things to continue on this new ground to try and make this the central political issue it needs to be.

If the Holy Spirit is capable of the heavy lifting required to get Pat Robertson to change his mind, then that strikes me as a very good sign.

If Apple is enslaving Chinese to make its iPhones, you don't need to eat the i-Phone, you need to make sure that Apple is paying a living wage to someone, and then it adds a dollar to the cost of iphones, and everybody's cool.

Permafrost in the soil [is melting], in the boreal and arctic areas in the world, and, probably even more alarming in the last six or eight months, the data on what is happening to the ice shelves in Greenland and the west Antarctic has begun to cause people to radically reassess the earlier conviction that those ice shelves were stable on a kind of century-long time scale.

The fight around climate change, which I've spent my life on, is somewhat more difficult than gay marriages because no one makes trillions of dollars a year being a bigot, and that's how much the fossil-fuel industry pulls in pumping carbon into the air. But the principle is the same, I think.

Between [Speaker of the House] Paul Ryan, [Senate Majority Leader] Mitch McConnell, and Donald Trump's team, I don't see a lot of openings for making real progress.