March 29, 2007 | ![]() |
life as we know it |
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Greenhouse Gas Effect Consistent Over 420 Million Years![]() 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 Did Dust Bust The 2006 Hurricane Season Forecasts ![]() 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 MIT Reveals The Tangle Under Turbulence ![]() 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 MORE HEADLINES |
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