Richard Harris

Ever wondered who the big greenhouse-gas emitters are in your neck of the woods? The answer is now just a click away.

The US Environmental Protection Agency today unveiled a new website that identifies most of the nation's biggest emitters of carbon dioxide, methane and other greenhouse gases. It lets you, for example:

After a third sleepless night, climate negotiators in Durban South Africa finally found a way to reach a compromise early Sunday morning. The deal doesn't set hoped-for new targets to limit global warming, but delegates ultimately decided to embrace it rather than risk a major collapse of this international process.

United Nations climate talks, like many negotiations, are a blend of dead seriousness and theater. Today at the talks in Durban, South Africa, an American college student provided a moment of theater by shouting out a short, unauthorized speech during the main session of the talks. Her interruption encapsulated frustration with the pace of the talks in general, and the United States' role in particular.

Fundamental disagreements among the nations attending the U.N. climate conference in Durban, South Africa, may stall a possible deal.

As diplomats from around the world gather in Durban, South Africa, for talks about climate change, a big question looms: What will become of the Kyoto climate treaty, which was negotiated with much fanfare in 1997. The treaty was supposed to be a first step toward much more ambitious actions on climate change, but it is now on the brink of fading into irrelevance. That could have major implications for the future of United Nations climate talks.

A new round of United Nations climate talks is getting under way in Durban, South Africa, Monday. And domestic struggles here in the United States are hampering the global talks.

The United States is second only to China in emitting gases that cause global warming. Despite a presidential pledge to reduce emissions two years ago, we're spewing more carbon dioxide than ever into the atmosphere.

That's putting a crimp on the 20-year-long struggle to develop a meaningful climate treaty.

Brace yourself for more extreme weather. A group of more than 200 scientists convened by the United Nations says in a new report that climate change will bring more heat waves, more intense rainfall and more expensive natural disasters.

These conclusions are from the latest effort of the Intergovernmental Panel on Climate Change — a consensus statement from researchers around the world.

Cleaning up the air, while good for our lungs, could make global warming worse. That conclusion is underscored by a new study, which looks at the pollutants that go up smokestacks along with carbon dioxide.

These pollutants are called aerosols and they include soot as well as compounds of nitrogen and sulfur and other stuff into the air. Natalie Mahowald, a climate researcher at Cornell University, says so far, scientists have mostly tried to understand what those aerosols do while they're actually in the air.