Is U.S. near a tipping point on global warming?
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U.S. policy on global warming seems headed for a tipping point, with politicians, business leaders and economists joining environmentalists to call for new laws to limit greenhouse gases that spur climate change.
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For years, we&#39;ve been subjected to warnings that &quot;global warming&quot; might one day change the way we live our lives. That day, pretty much, is today.
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If everyone on Earth generated the 20 tons of carbon dioxide emitted by each United States citizen yearly, the global tally now would be 134 billion tons a year, instead of 29 billion. That's a lot of billions.
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NASA and Columbia University Earth Institute research finds that human-made greenhouse gases have brought the Earthâs climate close to critical tipping points, with potentially dangerous consequences for the planet.
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SCORCHING summers, hotter than that of 2003, could become more common in Europe by the middle of this century. The risk has more than doubled because of human activity producing increasing greenhouse gases in the atmosphere.
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An unexplained jump in greenhouse gases since 2002 might herald a catastrophic acceleration of global warming if it becomes a trend, scientists said on Monday.
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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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Global warming has had little noticeable impact in Washington, D.C. 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.
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US recognises global warming danger but wants to lead response outside UN.
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If the Intergovernmental Panel on Climate Change is right, our planet is heading for some big upheavals. By 2100, they predict, global sea levels will have risen by 9cm to 88cm, and average temperatures will be about 1.5 to 5.5C higher than now.
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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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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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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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BUENOS AIRES, Argentina -- The United States is the big odd man out as diplomats, scientists, and environmentalists from more than 190 countries gather here at the 10th meeting of the United Nations' Convention on Climate Change. The convention's Kyoto Protocol, with its mandatory reduction of &quot;greenhouse gases&quot; that cause global warming, goes into force next year. Discussions of new ...
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2050 is apparently far enough away that the United States appears to ready to accept a call for a 50 percent reduction in greenhouse gas emissions by then. The Americans continue pushing for voluntary, not mandatory, cuts.
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BROOKLIN, Canada, Dec 18 (IPS) - This was the year that most people in the U.S. and  Canada began to take climate change seriously and express hope  that their governments would take action to reduce emissions --  but it is unclear if they will take action themselves.
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A new analysis of last year's near-record U.S. temperatures suggests human activity was the biggest factor in the 2006 warming, according to researchers at the National Oceanic and Atmospheric Administration.