The earth is a museum of divine intent.

When we think about global warming at all, the arguments tend to be ideological, theological and economic.

A world where one tenth of the population gets to be extremely wealthy, and six tenths very poor, is not, in the long run, a stable place.

Scientists had said, "If you keep burning coal and gas and oil, you will melt the Arctic." And then the Arctic melted just as they had predicted. Did Shell Oil look at the melt and say, "Huh, maybe we should go into the solar-panel business instead?" No, Shell Oil looked at that and said, "Oh, well, now that it's melted it will be easier to drill for more oil up there." That's enough to make you doubt about the big brain being a good adaptation.

When you have solar panels, your electricity gets there for free, no one's figured out how to meter the sun yet. And that's good.

The thing about global warming is that you can address it on a great number of levels - in fact you have to.

There is basically no one not on the payroll of Exxon Mobil or coal companies who any longer contend that this is not something to worry about.