There's a part of all of us whose impulse is to say, "Let's keep everything the same until I die and then you can do whatever you want afterward." And that's a difficult part.

I think it's going to be a tough century; I also think people are starting to rise up, and that a growth in human solidarity will help compensate for the loss of margin in the natural world that will make life harder.

I am still a consumer; the consumer world was the world I emerged into, whose air I breathed for a very long time, and its assumptions still dominate my psyche—but maybe a little less each year....There are times when I can feel the spell breaking in my mind….There are times when I can almost feel myself simply being.

A price on carbon sufficient to keep 80% of current reserves underground, rebated directly to citizens.

Katrina opened a good door and Al Gore went through it with his movie.

What makes us different? We're the creature that can decide not to do something that we are capable of doing.

One of my favorite places is the Maldives, an all-Muslim nation in the Indian Ocean with a culture that stretches back 5,000 years. But since the highest point in the archipelago is a meter or two above sea level, even the next hundred are not guaranteed. They've committed to becoming the first carbon-neutral nation on Earth by 2020, building windmills as fast as they can.