Where people aren't as deeply reliant on fossil fuel as in the United States, it's far easier for them to imagine change on this scale. When you go to Europe, they're much more ready. They use half the amount of energy per capita that we use. They can imagine using less than that. They see the benefits. They're ready to go.

All the science in the last few years, or almost all of it, really serves to show that the [climate] effects are larger and more rapid than we had thought even a decade ago.

It's off the charts - and if you don't believe the scientists, ask the insurance industry, the people we pay to analyze risk in our society.

If we all used clotheslines, we could save 30 million tons of coal a year, or shut down 15 nuclear power plants. And you don't have to wait to start. Yours could be up by this afternoon. To be specific, buy 50 feet of clothesline and a $3 bag of clothespins and become a solar energy pioneer.

Warm air holds more water vapor than cold, and so the atmosphere is about 4% wetter than it was 40 years ago. This loads the dice for flood and drought, and we're seeing both in stunning abundance.

We have built a greenhouse, a human greenhouse, where once there bloomed a sweet and wild garden.

I did very much like [Barack] Obama's attack on fossil fuel subsidies for fossil fuel companies. We asked for that in demonstrations and petitions, and now we'll try to push it forward.