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

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.

[Kids] will grow up into a world that's difficult and wonderful, and they'll make the best of it they can, and hopefully help turn it in the best possible direction.

Oil companies are radical because they're willing to alter the chemical composition of the atmosphere.

My house is covered in solar panels, I'm a great believer in all this - we all should be doing this.

According to new research emerging from many quarters that our continued devotion to growth above all is, on balance, making our lives worse, both collectively and individually

Climate change is a huge problem, an almost insoluble problem, for two reasons. One is the habits of the West in terms of consumption. The other is the incredible iniquity between poor countries and rich countries on this planet.