From: Juliet Eilperin, The Washington Post
Published October 6, 2009 10:27 AM

New Report Details Costs of Cutting Greenhouse Gas Emissions

With enough technological advances, the world could get to a dramatically lower level of greenhouse gas emissions at a cost of between one and three percent of global GDP per year, according to a report issued Tuesday by a group of economists. That price tag is in line with previous economic estimates aimed at meeting more modest climate goals.

Frank Ackerman, an economist at the Stockholm Environment Institute and Tufts University and the report's lead author, said the study looked at what it would take to meet the recommendations of climate scientists who call for reducing carbon atmospheric concentrations from their current level to 350 parts per million.

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The current level of carbon concentrations are 387 parts per million, compared to pre-industrial levels of 275. Most climate scientists have said the world must not allow these concentrations to grow beyond 450 parts per million to avoid dangerous climate impacts, but recently a group of researchers and environmental activists have suggested the world's nations must bring atmospheric concentrations down to 350 parts per million in order to curb serious sea level rise, drought and other major environmental problems.

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