Conservatives... are so opposed to government regulations that they are skeptical of anyone who identifies a problem that requires regulatory solutions - and they are inherently accepting of those who downplay such problems.

As long as a handful of U.S. scientists, most receiving funds from the fossil fuel industry, get equal time with hundreds of the world's leading climate scientists, the public inevitably ends up with a misimpression about the state of our scientific understanding.

Do believe that if we fail to act in time, it will be the single biggest regret any of us has at the end of our lives.

The entire western Siberian sub-Arctic region is melting, and it has all happened in the last three or four years.

The Asia-Pacific Partnership is a climate suicide pact. It is playing Russian roulette with six bullets in your gun.

Some 3 million years ago, when the earth was a little more than 3°C warmer than preindustrial levels (about 2.2°C warmer than today), Antarctica had far less ice and sea levels were a stunning 25 meters higher than today. If we stay on our current emissions path, the planet will almost certainly be that warm by the century's end.

The world beyond 450 ppm atmospheric concentrations of carbon dioxide, the world that crosses carbon cycle tipping points that quickly take us to 1000 ppm, is a world not merely of endless regional resource wars around the globe. It is a world with dozens of Darfurs. It is a world of a hundred Katrinas, of countless environmental refugees