[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.

We have to get our states to adopt what are called "renewable portfolio standards" pledging to use a lot of renewable energy by 2015 or 2020. We have to work with businesses and shops to get them engaged in the same way.

The world hasn't ended, but the world as we know it has-even if we don't quite know it yet.

All the signs of incipient activism and uprising, from Tahrir square to Zuccotti Park to [the recent] shutdown of the Internet to protest web censorship. People are getting smart and getting connected.

I think I have felt most profoundly that in our disruption of the most basic physical processes of creation, we are engaged not only in the act of suicidal self-destructiveness, but also in an act of thorough-going blasphemy.

From some tiny portion of the wealth the west accumulated in a hundred years of filling the atmosphere with carbon.

My guess is that liberating the fossil fuel industry to frack anywhere they want will drive down the rate at which we're converting to sun and wind. And it's entirely a rate problem at this point.