http://spaceflightnow.com/news/n0206/13sunscycles/

            Climate pattern linked to Sun's magnetic cycles
            DARTMOUTH COLLEGE NEWS RELEASE
            Posted: June 13, 2002

      Thanks to new calculations by a Dartmouth geochemist, scientists
      are now looking at the Earth's climate history in a new light. 

      Mukul Sharma, Assistant Professor of Earth Sciences at
      Dartmouth, examined existing sets of geophysical data and noticed
      something remarkable: the Sun's magnetic activity is varying in
      100,000-year cycles, a much longer time span than previously
      thought, and this solar activity, in turn, may likely cause the
      100,000-year climate cycles on Earth. This research helps
      scientists understand past climate trends and prepare for future
      ones.

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