When we think about global warming at all, the arguments tend to be ideological, theological and economic.

The real negotiation is between humans on the one hand and chemistry and physics on the other. And chemistry and physics, unfortunately, don't bargain.

We're going to need that kind of movement, because the fossil fuel industry is a sprawling adversary - at work everywhere, its tentacles in everybody's politics, invulnerable, I think, to direct frontal assault, but probably more brittle than it guesses if we come at it from all sides.

My goal was to have as many of the primary sources as I could made available for people to look at and understand. Climate change is probably the most important thing that's ever happened, and yet people's understanding of it and its history remains a little fuzzy.

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

We've built a new Earth. It's not as nice as the old one; it's the greatest mistake humans have ever made, one that we will pay for literally forever.

A spiritual voice is urgently needed to underline the fact that global warming is already causing human anguish and mortality in our nation and abroad, and much more will occur in the future without rapid action.