Climate Scientist Assails Critic in Virginia Governor's Race

Climate Scientist Assails Critic in Virginia Governor's Race 1

Steve Helber, AP Images

Michael Mann (left), a former researcher at the U. of Virginia now at Penn State, has joined luminaries like former President Bill Clinton on the stump to help Terry McAuliffe (center) defeat Kenneth T. Cuccinelli in next week's gubernatorial election.

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close Climate Scientist Assails Critic in Virginia Governor's Race 1

Steve Helber, AP Images

Michael Mann (left), a former researcher at the U. of Virginia now at Penn State, has joined luminaries like former President Bill Clinton on the stump to help Terry McAuliffe (center) defeat Kenneth T. Cuccinelli in next week's gubernatorial election.

Having been hounded by Virginia's attorney general, Kenneth T. Cuccinelli, the climate scientist Michael E. Mann is getting payback by being a leading voice of opposition to the Republican politician's gubernatorial campaign.

Mr. Mann, a former University of Virginia professor who now directs Pennsylvania State University's Earth System Science Center, returned to Charlottesville, Va., this week for his third appearance at a rally for Mr. Cuccinelli's Democratic opponent, Terry