We have to figure out ways to scare and entice our leaders more effectively than the fossil fuel industry has managed to scare and entice them. They've got the big checkbooks. We've got to have the big crowd.

A third of summer sea ice in the Arctic is gone, the oceans are 30 percent more acidic, and since warm air holds more water vapor than cold, the atmosphere over the oceans is a shocking five percent wetter, loading the dice for devastating floods.

I think that it is impossible to think of a threat to social justice greater than what we are doing to the earth's atmosphere at the moment.

TV makes it so easy to postpone living for another half hour.

The world is on fire, and I'm doing my best to help steer the firetruck.

Profiting from companies that are overloading the atmosphere with carbon and changing the atmosphere is wrong.

It's our own throat that we are cutting in the end along with everyone else's. We need to be exercising precisely the kind of leadership that might allow us to nudge China and India, say, onto different energy trajectories, in order to improve our own chances of surviving this century.