The Copenhagen climate conference currently underway in Denmark has sparked global focus on "going green" in favor of environmentally friendly habits. But one environmental activist says that's a waste of time. Mike Tidwell, of the Chesapeake Climate Action Network, explains why he's skeptical of the green movement. Tidwell says the focus is a distraction from serious environmental action. Full Story »
The NASA scientist who accused agency administrators and the Bush White House of manipulating public releases of climate data says he is disappointed that President Obama hasn't taken more action on the issue. Full Story »
We're tagging along with Carol Greider, a Johns Hopkins molecular biologist, as she picks up a share of this year's Nobel Prize for physiology or medicine in Stockholm. Full Story »
The Environmental Protection Agency announced Monday that greenhouse gas pollution is a threat to human health. That finding paves the way for the agency to regulate carbon dioxide emissions from factories, power plants and cars under the Clean Air Act if Congress doesn't pass legislation to cut emissions. Full Story »
The climate talks opened Monday in Copenhagen, with more than 190 nations represented. The U.S. and China have pledged some actions already, but negotiators so far haven't even agreed about what the overall deal will look like. Full Story »
The United States has all the tools it needs to replace its old coal energy economy and drastically cut greenhouse emissions. So what's missing? Political will — and money. Full Story »
NPR science producer Jason Orfanon sends another dispatch from Antarctica. Hear the mellifluous sound of a snoring elephant seal! Full Story »
The Environmental Protection Agency has concluded such gases are endangering people's health and must be regulated, officials tell The Associated Press. The move signals the Obama administration is prepared to contain global warming without congressional action if necessary. Full Story »
Over 190 countries, including the United States, are taking part in a conference to evaluate global progress in counteracting climate change and set new goals. The Copenhagen conference began Dec. 7. This interactive shows emission trends and warming indicators over the last two decades. Full Story »
SpaceShipTwo, a privately funded commercial passenger spacecraft, is set to make its public debut in the Mojave Desert after five years of secret construction. The project is bankrolled by Virgin Galactic founder, British billionaire Sir Richard Branson. Full Story »
