Four countries have entered a race to become the world

Iceland Prime Minister Geir Haarde, who since 2006 has presided over this small country that derives 80 percent of its energy needs from renewable sources, has been named the greenest political leader by NEWSWEEK. Iceland's happy status

At this vital juncture in the earth's history, it's clear that the American people are looking for a presidential candidate who will take climate change "very seriously." One who favors "unbiased research" into the problem and promises to support regulations that are "based on science." Someone, perhaps, like George W.

Just who is in charge of climate change?

OECD environment ministers on Tuesday stood by efforts to tackle climate change, despite arguments in some quarters that at a time of economic uncertainty, spending on green issues could damage competitiveness. In an

Natural climate changes may offset human-caused global warming over the next decade, keeping ocean temperatures the same or even temporarily cooling them slightly, German researchers said on Wednesday. However, this short-term situation might create a problem if policymakers regarded it as a sign they could ease efforts to limit greenhouse gases or play down global warming.

The International Energy Agency, an organization that monitors the energy market of industrialized countries, has reprimanded Finland for subsidizing the electricity generated from peat-fired power

biofuels have often been billed as the silver bullets of climate change. In recent times, however, their benefits have come under scrutiny. One analysis suggests that clearing forests and savannah

Before humans began burning fossil fuels, there was an eons-long balance between carbon dioxide emissions and Earth's ability to absorb them, but now the planet can't keep up, scientists said on Sunday. The finding, reported in the journal Nature Geoscience, relies on ancient Antarctic ice bubbles that contain air samples going back 610,000 years.