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Is the U.S. Near a Tipping Point on Global Warming?

FEB 20, 2007
Physics Today
Environmental News Network : 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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Modeling the shapes of tree branches, neurons, and blood vessels is a thorny problem, but researchers have just discovered that much of the math has already been done.

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