The Intergovernmental Panel on Climate Change has seriously underestimated the technological challenges involved in lowering man-made greenhouse gas emissions, a Canadian economist and two U.S. experts on climate change argue in the journal Nature. Assumptions in the IPCC's climate models divert attention from greenhouse gas reduction policies, they allege in a commentary published online Wednesday.
The authors are McGill University economist Christopher Green, University of Colorado climate policy expert Roger Pielke Jr. and U.S. National Center for Atmospheric Research climatologist Tom Wigley.
Last year, reports by the panel, which was established in 1988 by the World Meteorological Organization and the United Nations Environment Programme, spelled out the consensus on climate change from scientists and policy makers, arguing global warming was unequivocally occurring and was very likely man-made in origin. More >>>
