UN-sponsored meeting bans nine chemicals – but not DDT

Nine more persistent chemicals banned worldwide.

Antarctic voyage

A firsthand look at the effects of climate change near the South Pole.

Is the Internet bad for the environment?

The gray wolf heads back to court

Your flat screen TV uses too much energy. So do your other appliances.

Video: The last mountain gorillas, and their protectors

Energy efficiency can deliver big rewards

New federal standards could cut energy bills by about $16 billion by 2030.

Preventing a 2-degree C temperature rise = almost no fossil fuel use

Two new climate studies say that the US must cut carbon dioxide emissions by 90 to 95 percent to prevent the planet from becoming too warm.

The worst air in the US? It's not in L.A.

Pollution levels and topography have helped make smog 'a way of life' in Bakersfield, Calif.

Are you breathing dirty air?

Climate change forum ABCs

Is a bad economy good for the environment?

A recession may be a cruel remedy for environmental degradation. But some experts say the earth welcomes the breathing room.

Cuba's environment – how will a thaw in relations with the U.S. affect it?

The pros and cons of wind power are making news

China's green leap forward?

Activists must tread softly to avoid antagonizing Beijing, butthere’s much at stake in this rapidly developing country.

The Earth Day generation

New York considers landmark environmental code

Proposed legislation could reduce the city’s total carbon output by 5 percent.

The Boston Marathon goes green and so do other road races

Would cash-for-clunkers be good or bad for the environment?

Paying people to get rid of old cars is supposed to help the economy and the environment. Not everyone agrees it will do either.

Antarctic discovery: Microorganisms live millions of years without light or oxygen