U.N. panel says "very likely" humans cause warming
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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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A decade after the world pledged to prevent "dangerous" global warming, 194 nations meet next week to review whether rare heatwaves and a fast Arctic thaw may signal that the planet is nearing the brink.
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Findings of UN panel on global warming put African and Asian regions among those most at risk.
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Science & environment: In pictures:  A UN report has warned of the dangers posed by global warming.
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An international panel of climate scientists said yesterday that there is an overwhelming probability that human activities are warming the planet at a dangerous rate, with consequences that could soon take decades or centuries to reverse.
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global average projected by UN reports. Siberia and Alaska have already warmed by 2-3 C since the 1950s. outweighed by threats to indigenous peoples and the habitats of animals and plants.
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Suppose that the pessimistic forecasts of global warming are accurate. Suppose that the planet's temperature rises according to the high-end scenario of the U.N.'s Intergovernmental Panel on Climate Change, and that we experience the economic and social impacts (like hunger, malaria and coastal flooding) projected by the much-publicized Stern Review sponsored by the British government. [...].
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Melting glaciers, ice sheets and snow cover could speed the rate at which the planet heats up, causing rising sea levels, flooding and water shortages that impact as many as 40 percent of the world's population, a U.N. report said Monday.
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A U.N. report delivers the most comprehensive picture yet on global warming  -  and says that human activity is "very likely" the culprit
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A Bush administration report suggests that evidence of global warming has begun to affect animal and plant populations in visible ways, and that rising temperatures in North America are due in part to human activity.
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Scientists say changes in the earth&#39;s climate from human influences are occurring particularly intensely in the Arctic region, evidenced
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The U.N. climate panel agreed its starkest warning yet on Thursday that human activities are causing global warming that may bring more droughts, heatwaves and rising seas, delegates said.
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The U.N. climate panel agreed its strongest warning yet on Thursday that human activities are causing global warming that may bring more droughts, heatwaves and rising seas, delegates said.
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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.
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The world's top climate scientists said on Friday global warming was man-made, spurring calls for urgent government action to prevent severe and irreversible damage from rising temperatures.
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UNITED NATIONS, Sept. 24 -- U.N. Secretary General Ban Ki-moon said Monday that a 15-year international effort to stem global warming has not halted the buildup of greenhouse gas emissions and that governments must take "unprecedented action" to reverse the trend.
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The authors of a U.N. panelâs report on climate change are being inundated with tweaks ahead of tomorrowâs release.