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Global warming of the future is projected by ancient carbon emissions
12-07-2006 · EurekAlert!Global warming 55 million years ago suggests a high climate sensitivity to carbon dioxide, according to research led by Mark Pagani, associate professor of geology and geophysics at Yale and published in the December 8 issue of Science.
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Keywords: global, warming, future, projected, ancient, carbon, emissions, emission
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Similar news on "Global warming of the future is projected by ancient carbon emissions":
- Ancient climate change may portend toasty future
12-07-2006 · EurekAlert!
Scientists, including Ken Caldeira of the Carnegie Institution's Department of Global Ecology, have found that the Earth's global warming, 55 million years ago, may have resulted from the climate's high sensitivity to a long-term release of carbon. This finding contradicts the position held by many climate-change skeptics that the Earth system is resilient to such emissions.
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- Ancient British bog provides clue to global warming
09-19-2007 · EurekAlert!
Dr. Richard Pancost from the University of Bristol and colleagues, publishing today in Nature, show that carbon isotope values of hopanoids -- compounds made by bacteria -- suddenly decrease in a manner that can only be explained by switching to a diet of methane. This suggests that methane emissions must have increased at that time.
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- Past greenhouse warming events provide clues to what the future may hold
02-15-2008 · EurekAlert!
Scientists studying an extreme period of global warming 55 million years ago are piecing together an increasingly detailed picture of its causes and consequences. Their findings describe what may be the best analog in the geologic record for the global changes likely to result from continued carbon dioxide emissions from human activities.
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- U of Minnesota study: Destroying native ecosystems for biofuel crops worsens global warming
02-07-2008 · EurekAlert!
Turning native ecosystems into "farms" for biofuel crops causes major carbon emissions that worsen the global warming that biofuels are meant to mitigate, according to a new study by the University of Minnesota and the Nature Conservancy.
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- New research discredits $100B global warming 'fix'
11-29-2007 · EurekAlert!
Scientists have revealed an important discovery that raises doubts concerning the viability of plans to fertilize the ocean to solve global warming, a projected $100 billion venture. According to Dr. Michael Lutz at UM's Rosenstiel School of Marine and Atmospheric Science, ocean fertilization schemes, which resemble an artificial summer, may not remove as much carbon dioxide from the atmosphere as has been suggested, because they ignore important natural processes.
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- Nature Conservancy study raises major questions on biofuels
02-07-2008 · EurekAlert!
A new Nature Conservancy study finds that converting land for biofuel crops results in major carbon emissions, actually worsening the problem of global warming instead of mitigating it. "This research examines the conversion of land for biofuels and asks the question 'Is it worth it?' Does the carbon you lose by converting forests, grasslands, and peatlands outweigh the carbon you 'save' by using biofuels instead of fossil fuels? And surprisingly, the answer is no,? said lead author Joe Fargione, a scientist for The Nature Conservancy.
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- Dirty snow may warm Arctic as much as greenhouse gases
06-06-2007 · EurekAlert!
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.
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- Coral reefs unlikely to survive in acid oceans
12-14-2007 · EurekAlert!
Carbon emissions from human activities are not just heating up the globe, they are changing the ocean's chemistry. This could soon be fatal to coral reefs, which are havens for marine biodiversity and underpin the economies of many coastal communities. Scientists from the Carnegie Institution's Department of Global Ecology have calculated that if current carbon dioxide emission trends continue, by mid-century 98 percent of present-day reef habitats will be bathed in water too acidic for reef growth.
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- Engineered weathering process could mitigate global warming
11-07-2007 · EurekAlert!
Researchers at Harvard University and Pennsylvania State University have invented a technology, inspired by nature, to reduce the accumulation of atmospheric carbon dioxide caused by human emissions. By electrochemically removing hydrochloric acid from the ocean and then neutralizing the acid by reaction with silicate rocks, the researchers say they can accelerate natural chemical weathering, permanently transferring CO2 from the atmosphere to the ocean.
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- Researchers examine carbon capture and storage to combat global warming
06-11-2007 · EurekAlert!
While solar power and hybrid cars have become popular symbols of green technology, Stanford researchers are exploring another path for cutting emissions of carbon dioxide, the leading greenhouse gas that causes global warming.Carbon capture and storage, also called carbon sequestration, traps carbon dioxide after it is produced and injects it underground. The gas never enters the atmosphere. The practice could transform heavy carbon spewers, such as coal power plants, into relatively clean machines with regard to global warming.
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