Setting up a workable market for climate change credits in Europe has proved difficult and contentious, pointing to pitfalls for the U.S. as it begins to consider a similar system.

Setting up a workable market for climate change credits in Europe has proved difficult and contentious, pointing to pitfalls for the U.S. as it begins to consider a similar system.

Adding electricity from renewable sources would impose new demands on a transmission system that was never designed for large power transfers over extremely long distances, an industry report says.

Adding electricity from these sources would impose new demands on a transmission system that was never designed for large power transfers over extremely long distances, an industry report says.

European Union legislators voted in favor of laws aimed at reducing greenhouse gas emissions, but frustrated some environmental advocates by taking steps to ease the burden on industry.

Ten states are about to undertake the nation’s most serious effort yet to tackle climate change, but there are worries that it may fail to reduce pollution.

A coalition working to promote green jobs and clean energy has been struggling with how to offset the global warming pollution that results from its day-to-day operations.

The Environmental Protection Agency announced a first draft of a rule that will govern injecting carbon dioxide into underground storage.

Exelon, the electric company based in Chicago, will promise to cut greenhouse gas emissions by 2020 by an amount larger than its total emissions in 2008.

Both opponents of coal use and the company that wants to build the plant said it was the first time a court decision had linked carbon dioxide to an air pollution permit.