Politicians think that if matters look difficult, compromise is a good approach. Unfortunately, nature and the laws of physics cannot compromise - they are what they are.

The greatest danger hanging over our children and grandchildren is initiation of changes that will be irreversible on any time scale that humans can imagine.

It's as certain that as long as fossil fuels are the cheapest energy, we will just keep burning them.

Until the public demands otherwise, the policy makers will continue to serve their financiers.

We have at most ten years—not ten years to decide upon action, but ten years to alter fundamentally the trajectory of global greenhouse emissions.

I think we have a very brief window of opportunity to deal with climate change. No longer than a decade at most.

Well, you know what happens to crime when the heat goes up.