A voluntary simplification of life-styles is not beyond our abilities, but it is probably outside our desires.

Do I think that people should in the best of all possible worlds have to go to jail for wanting the US government to pay attention to the warnings of scientists about climate change? Not really. I mean, in a rational world, if all the scientists said, "The worst thing that ever happened is about to happen and here's what you should do to stop it," you would expect any rational system to say, "Oh, sure, OK, let's do something about it." But that's not the world we live in. In the world we live in, you do need people willing to stand up, fight, march and sometimes go to jail.

I think fracking for gas will reduce the incentive to turn to renewables, and I think it will do a lot of other damage across the countryside.

Those of us in the west have figured out a lot of ways to damage the lives of poor people in this country and around the world over the years.

The real negotiation is between humans on the one hand and chemistry and physics on the other. And chemistry and physics, unfortunately, don't bargain.

what you do every day is what forms your mind and precious few of us can or would spend most days outdoors.

The most blatant examples are increased power and frequency in hurricanes and the increased depth and frequency of heat waves.