We just see a sort of cascading amount of data of the damage that is being done by those increased temperatures.

Irene's got a middle name, and it's Global Warming.

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.

[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.

The latest computer modeling I've seen indicates that at mid-century, there might be 150 million people classified as "environmental refugees."

The most blatant examples are increased power and frequency in hurricanes and the increased depth and frequency of heat waves.

The Arctic and the Antarctic are melting quickly. We may have waited too long to get started. But this is a day for optimism because the battle is fully joined, and the idea that big oil is unbeatable is no longer true.