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Speak softly and carry a big hockey stick

Posted on September 04, 2008

By Joseph RommThe hockey stick graph is a reconstruction of Northern Hemisphere temperatures over the past thousand years. It showed a sharp rise starting about a century ago. Global warming deniers and doubters have long attacked the graph asserting that we were as warm if not warmer hundreds of years ago. But a 2006 National Academy of Sciences report largely reaffirmed the analysis. A new peer-reviewed study by climatologists and earth scientists Michael Mann, Zhihua Zhang, Malcolm Hughes, Raymond Bradley, Sonya Miller, Scott Rutherford, and Fenbiao Ni now extends the reconstruct...

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