What we are doing to the future of our children, and the other species on the planet, is a clear moral issue.

I've tried to be a straight scientist doing the science and reporting it as best I can.

The 5-year mean global temperature has been flat for the last decade, which we interpret as a combination of natural variability and a slow down in the growth rate of net climate forcing.

We have to, in the next ten years, begin to decrease the rate of carbon dioxide emissions and then flatten it out. If that doesn't happen in ten years, we're going to be passing certain tipping points. If the ice sheets begin to disintegrate, what can you do about it? You can't tie a rope around an ice sheet.

The United States did not sign Kyoto, yet its emissions are not that different from the countries that did sign it.

The climate is nearing tipping points. Changes are beginning to appear and there is a potential for explosive changes, effects that would be irreversible, if we do not rapidly slow fossil-fuel emissions over the next few decades.

The forcings that drive long-term climate change are not known with an accuracy sufficient to define future climate change.