The last time Earth was 1°C warmer than today, sea levels were 20 feet higher.

Time is short. We have at most a decade to sharply reverse course.

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.

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 best thing about improvements in health care is that all the climate-change deniers are now going to live long enough to see how wrong they were.

The coal plants that will be built from 2005 to 2030 will release as much carbon dioxide as all of the coal burned since the industrial revolution more than two centuries ago.