Global warming 'very likely' man-made
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The world's leading climate scientists, in their most powerful language ever used on the issue, said global warming is "very likely" man-made, according to a new report obtained Friday by The Associated Press.
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Politicians in the nation's capital have been reluctant to set limits on the carbon dioxide pollution that is expected to warm the planet by 4 to 7 degrees Fahrenheit during the next century, citing uncertainty about the severity of the threat. But that uncertainty may have shrunk somewhat with the release last week of two scientific reports suggesting that global warming is not just a hypothetical possibility, but a real phenomenon that has already started transforming especially sensitive parts of the globe.
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The world's top climate scientists said on Friday that global warming was man-made, spurring calls for urgent government action to counter fears of severe and irreversible damage from rising temperatures.
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Officials from 113 countries agreed Thursday that a much-awaited international report will say that global warming was "very likely" caused by human activity, delegates to a climate change conference said. Dozens of scientists and bureaucrats are editing the new report by the Intergovernmental Panel on Climate Change in closed-door meetings in Paris. Their report, which must be unanimously approved, is to be released Friday.
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Science & environment: In pictures:  A UN report has warned of the dangers posed by global warming.
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Global temperatures could rise by as much as 11 degrees Celsius, a major climate prediction project suggests.
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A new paper from climate scientists finds that dropping water supplies in the West are primarily due to manmade global warming through the increase of atmospheric greenhouse gases.
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Ice caps are melting on both Earth and Mars. According to one researcher's controversial theory, this suggests that global warming has nothing to do with humankind.
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There's more to the recent dramatic and alarming thawing of the Arctic region than can be explained by man-made global warming alone, a new study found. Nature is pushing the Arctic to the edge, too.
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The US chief scientist John Marburger says climate change is almost certainly down to human activities.
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Global warming gases trapped in the soil are bubbling out of the thawing permafrost in amounts far higher than previously thought and may trigger what researchers warn is a climate time bomb.
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VIENNA, Aug 28 (IPS) - Human-made emissions of greenhouse gases believed  to provoke damaging climate change must peak in the next 10 to 15  years, and be reduced afterwards by well over 50 percent from  current levels until 2050, a top UN climate official said here  Tuesday.
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The U.N. climate panel issued its toughest warning yet on Friday that human activities are to blame for global warming and projected a damaging, accelerating rise in temperatures in the 21st century.
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The U.N. climate panel agreed on Thursday it was "very likely" that human activities were the main cause of global warming in the past 50 years, stepping up certainty from a 2001 report, delegates said.
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There's more to the recent dramatic and alarming thawing of the Arctic region than can be explained by man-made global warming alone, a new study found. Nature is pushing the Arctic to the edge, too
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Scientists are warning that the earth&#39;s climate could be changing more rapidly than anyone thought because of a sudden and unexplained rise in the main greenhouse gas, carbon dioxide.
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The U.N. climate panel is set to issue its strongest warning yet on Friday that human activities are causing a damaging global warming likely to bring more heatwaves, droughts and rising seas.