March 29, 2007 24/7 News Coverage life as we know it
Healthy Coastal Wetlands Would Adapt To Rising Oceans
Durham NC (SPX) Mar 29, 2007
Tidal marshes, which nurture marine life and reduce storm damage along many coastlines, should be able to adjust to rising sea levels and avoid being inundated and lost, if their vegetation isn't damaged and their supplies of upstream sediment aren't reduced, a new Duke University study suggests. Such marshes "offer great value as buffers of coastal storms in cities such as New Orleans, which is separated from the Gulf of Mexico by marshlands," Matthew Kirwan and A. Brad Murray said in a report published online on Monday, March 26, in the journal "Proceedings of the National Academy of Sciences" ... read more

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Greenhouse Gas Effect Consistent Over 420 Million Years
New Haven CT (SPX) Mar 29, 2007
New calculations show that sensitivity of Earth's climate to changes in the greenhouse gas carbon dioxide (CO2) has been consistent for the last 420 million years, according to an article in Nature by geologists at Yale and Wesleyan Universities. A popular predictor of future climate sensitivity is the change in global temperature produced by each doubling of CO2 in the atmosphere. This st ... more

  • early-earth: Mammals Geared For Global Rise Long After Dinosaurs Died
  • early earth: Dinosaur Extinction Did Not Cause The Rise Of Present-Day Mammals

    Did Dust Bust The 2006 Hurricane Season Forecasts
    Greenbelt MD (SPX) Mar 29, 2007
    A recent NASA study suggests that tiny dust particles may have foiled forecasts that the 2006 hurricane season would be another active one. In June and July 2006, there were several significant dust storms over the Sahara Desert in Africa. As this dust traveled westward into the Atlantic, satellite data show that the particles blocked sunlight from reaching the ocean surface, causing ocean ... more

  • climate: Republicans Move To Block Al Gore Live Earth Rock Concert
  • hurricane: Scientists Derive Bottom-Up Air-Sea Momentum Transfer Under Major Hurricane

    MIT Reveals The Tangle Under Turbulence
    Cambridge MA (SPX) Mar 29, 2007
    Picture the flow of water over a rock. At very low speeds, the water looks like a smooth sheet skimming the rock's surface. As the water rushes faster, the flow turns into turbulent, roiling whitewater that can overturn your raft. Turbulence is important in virtually all phenomena involving fluid flow, such as air and gas mixing in an engine, ocean waves breaking on a cliff and air whippin ... more

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