Greenhouse gases went on sale Thursday as 10 Northeastern states held the nation's first auction of pollution credits aimed at curbing global warming. ...more

September 26, 2008

The world pumped up its pollution of the chief man-made global warming gas last year, setting a course that could push beyond leading scientists' projected worst-case scenario, international researchers said Thursday. ...more

September 26, 2008

Although cities are hot spots for global warming, people living in them turn out to be greener than their country cousins. ...more

May 29, 2008

Koalas are threatened by the rising level of carbon dioxide pollution in the atmosphere because it saps nutrients from the eucalyptus leaves they feed on, a researcher said recently. ...more

May 23, 2008

The United States insisted Wednesday that it has been taking steps to tackle rising temperatures and that many of its actions to promote energy efficiency and switch to cleaner technologies have been going unnoticed by the rest of the world. ...more

December 13, 2007