"Targets on reductions in greenhouse gas emissions set by the Executive are also now well on track to be met, " he said.

BBC: NI greenhouse gas emissions fall

The center's David Wheeler, who led the project, says the information should be useful to consumers, investors, politicians and activists who will now find it easier to track greenhouse gas emissions to their source.

NPR: Web Site Tracks Carbon Emission Sources

Keenest of all, Denmark, Finland, the Netherlands, Norway and Sweden now tax emissions of carbon dioxide, the main greenhouse gas.

ECONOMIST: Taxes for a cleaner planet

And, now that the world is talking seriously about cutting greenhouse gas emissions, solar may have its day in the sun.

CNN: Will solar energy come into the mainstream?

The most efficient way we have now to capture CO2 is to remove it from flue gas as the emissions escape.

NEWYORKER: The Climate Fixers

What is true is right now that we don't have all the technology to prevent greenhouse gas emissions from coal-fired power plants, but the technology is close and it makes sense for us to make that investment now, not only because it will be good for America but it will also ultimately be good internationally.

WHITEHOUSE: Your Interview with the President

Federal regulators now touch areas of economic activity they once left alone, such as greenhouse-gas emissions.

ECONOMIST: The size of the state

Crop yields are now projected to be better, natural gas-fired distilling is projected to get more efficient, and the carbon emissions from increased land use are now less than previously calculated.

FORBES: Obama: Corn Ethanol Isn't So Bad After All