For the past several years, there has been one image that has been central to the climate change debate: the infamous “hockey stick” graph.
Since the graph appeared in the paper “Northern hemisphere temperatures during the past millennium: Inferences, uncertainties, and limitation,” Michael Mann has been hard at work defending his research.
“The hockey stick graph became a central icon in the climate wars,” Mann said at the Feb. 11 meeting of the American Association for the Advancement of Science. “The graph took on a life of its own.”
The graph gained notoriety when the Intergovernmental Panel on Climate Change published the image and starting using it to drive home the message of climate change. The graph still remains an ever-present part of the climate debates.