After a lifetime of nature shows and magazine photos, we arrive at the woods conditioned to expect splendor - surprised when the parking lot does not contain a snarl of animals attractively mating and killing each other.

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.

We'd like to get the fossil fuel industry on the back foot for a while, having to deal with us.

We've been in lots of places that I suppose, by Oxford standards, would be considered illiterate, but everyone's completely conversant with the idea that here is a number, and that number is above it, and that's too high. It's not a very complicated idea.

For the first time in 150 years, the USDA reported there were more farms in America, not fewer. That has to make you happy.

The irony is that one of the things people want to solve climate change is more market - more price on carbon so that markets have something to chew on when they think about climate change instead of the complete monopoly, the absurdity of allowing these guys to own the sky for free - socialise all of the costs and privatise all of the profits.

Renewable energy is far more labor-intensive than fossil fuel production.