This is change, whether you believe in it or not. And not just pocket change.

The United States has decades of carbon dioxide storage potential, but it's not necessarily in the places where the Energy Department is planning to pump the greenhouse gas underground as part of pricey demonstration projects, according to a Duke University geologist.

Looming debates on federal climate change legislation as well as growing concern over the fate of the financial sector are prompting renewed focus by lawmakers, industry groups and other experts on how to regulate emissions trading markets and other carbon-related financial products created under a mandatory greenhouse gas (GHG) control regime, setting up likely substantive and jurisdictional battles on the issue, sources say.

In nature, the threat level is always at least orange: Predators and plagues are an unrelenting menace to the well-being (and successful reproduction) of every living thing.

Should the Obama administration's Environmental Protection Agency begin regulating carbon dioxide emissions under the Clean Air Act, since the Supreme Court's 2007 Massachusetts v. EPA ruling declared that the agency has that authority? Or should regulators wait for a law that explicitly controls CO2 and other greenhouse gases?

Four faculty and staff members from the Nicholas School of the Environment and the Nicholas Institute for Environmental Policy Solutions will take part in the 2009 annual meeting of the American Association for the Advancement of Science (AAAS), Feb. 12-16 in Chicago.

Policy analysts at Duke University’s Nicholas Institute for Environmental Policy Solutions say the climate protection initiative announced today on Capitol Hill by members of the U.S. Climate Action Partnership (USCAP) is “an equitable solution to a difficult problem,” and sends “a unified signal” that environmentalists and industrialists alike support federal cap-and-trade legislation to address climate change.

Yale Environment 360, a new environmental website launched by the Yale University School of Forestry & Environmental Studies, asked a wide-ranging group of environmental activists, scientists, and thinkers to answer the following question: If you were advising Barack Obama, what would you tell him are the most important environmental and energy initiatives that he should launch during his first 100 days? The results are reproduced here by special arrangement with Yale Environment 360.

A new way to reduce carbon dioxide emissions and tackle climate change had been unveiled by leading economists.

Why, when the skies are gray and the December chill conjures visions of anything but parched lake beds and sun-baked clay, would anyone want to talk about ... water shortages?