No doubt you have heard of the Mann "hockey stick" graph that shows global temperatures shooting through the roof in the late 20th century after centuries of stability. Much of the politics and rhetoric surrounding anthropogenic global warming (AGW) has been based on this graph, most notably Al Gore's entertaining move An Inconvenient Truth.
Now the data behind the graph has been scientifically discredited by Canadian scientist Steve McIntyre. Much more on the scandal here.
Thursday, October 1, 2009
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