Damn the pesky models! Full speed ahead.
China's top climate-change negotiator makes a case that his country is gearing up for the December summit in Copenhagen.
Al Gore's views on climate change are advancing as rapidly as the phenomenon itself.
A reality that's still within reach.
Most climate researchers see the Arctic in color-coded satellite pictures. Fewer go to see it up close.
Many farming communities think global warming won't hurt them. They're wrong.
They're fast, fuel-efficient, and cleaner than ever. But will Americans really get behind diesel-powered cars?
The time is now for an international deal on climate change.
The men and women who have the power and budgets to clean up the environment and, more important, have the ear of the president.
It's time we considered alternatives.
Vilified as an environmental disaster, the meat industry, abetted by science, is now trying to change its ways.

Ten small and stylish rides that save gas and money
A look back at the past 100 years
The unsung heroes of the movement
Lake Mead, and many others could be dry in the next 10 years.
From Madonna to Sting, celebrities may not be practicing what they preach.

A look at countries who have excelled, and those lagging behind in environmental performance.
See how much your energy usage impacts the environment then compare your score to other Americans'.