American researcher Patrick Michaels questions the evidence supporting human-influenced global warming.

VOA: special.2010.01.19

Patrick Michaels is a senior fellow at the Cato Institute.

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On the other hand, scientists such as climatologist and NASA Science Team leader Dr. Roy Spencer, meteorologist Anthony Watts, and Past President of the American Association of State Climatologists Dr. Patrick Michaels have vigorously explained why global warming will, if anything, reduce the frequency and strength of tornadoes.

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