Those of us in the west have figured out a lot of ways to damage the lives of poor people in this country and around the world over the years.

what you do every day is what forms your mind and precious few of us can or would spend most days outdoors.

I think that so far the political and economic power of the fossil fuel industry has trumped all else.

Our weird problem is an abundance of resources and a shortage of hard economic reasons not to use them.

Global warming is no longer a philosophical threat, no longer a future threat, no longer a threat at all. It's our reality.

It was huge mistake to avoid working with the rest of the world because (a) we're the largest source of the problem: 4% of us who are in the U.S. produce 25% of the world's carbon dioxide.

We had other currencies that we could find work in - the currencies of movements: passion, spirit, creativity.