The global warming debate has focused on carbon dioxide emissions, but scientists at UC Irvine have determined that a lesser-known mechanism - dirty snow - can explain one-third or more of the Arctic warming primarily attributed to greenhouse gases.

German Chancellor Angela Merkel says she will not compromise in getting the world's top industrialized nations to agree to cut greenhouse gases that contribute to global warming.

U.S. President George W. Bush's call for a summit to find ways to reduce greenhouse gases is "purely and simply smoke and mirrors".

NASA and Columbia University Earth Institute research finds that human-made greenhouse gases have brought the Earth's climate close to critical tipping points, with potentially dangerous consequences for the planet.

Since California was made the first state to limit greenhouse gases, Gov. Arnold Schwarzenegger has been signing agreements with other state and foreign governments to address global warming.

The first evidence that recent climate change has weakened one the Earth's natural carbon 'sinks' is published this week in the journal Science.

Australian government scientists have found that greenhouse gases are being pumped into the earth's atmosphere faster than ever since the turn of the century. They have also found that emissions in Australia are increasing considerably faster than the global average.

Scientists have observed the first evidence that the Southern Ocean's ability to absorb the major greenhouse gas, carbon dioxide, has weakened by about 15 per cent per decade since 1981.

As climate change becomes more and more a central issue in local, national, and international discussions, understanding the global carbon budget, and how it influences trends in global warming, will become increasingly crucial. The carbon cycle is related to climate and climatic change because it controls carbon dioxide, the most important of the greenhouse gases.

Scientists at a UN conference on climate change say nations must make drastic cuts in carbon-dioxide (CO2) emissions in order to limit global warming. The recommendations come in a major report agreed today at a meeting in Bangkok by the Intergovernmental Panel on Climate Change.

Arctic sea ice is melting at a significantly faster rate than projected by even the most advanced computer models, a new study concludes. The research, by scientists at the National Center for Atmospheric Research (NCAR) and the University of Colorado's National Snow and Ice Data Center (NSIDC), shows that the Arctic's ice cover is retreating more rapidly than estimated by any of the 18 computer models used by the Intergovernmental Panel on Climate Change (IPCC) in preparing its 2007 assessments.

A recent study in Nature1 suggested that terrestrial plants may be a global source of the potent greenhouse gas methane, making plants substantial contributors to the annual global methane budget. This controversial finding and the resulting commotion triggered a consortium2 of Dutch scientists to re-examine this in an independent study.