NY Times - Hans Joachim Schellnhuber, the director of the Potsdam Institute for Climate Impact Research in Germany, said that if the buildup of greenhouse gases and its consequences pushed global temperatures 9 degrees Fahrenheit higher than today - well below the upper temperature range that scientists project could occur from global warming - Earth's population would be devastated. . .
Dr. Schellnhuber, citing his own research, said that at certain "tipping points," higher temperatures could cause areas of the ocean to become deoxygenated, resulting in what he calls "oxygen holes" between 600 and 2,400 feet deep. These are areas so depleted of the gas that they would badly disrupt the food chain.
Unabated warming would also lead to "disruption of the monsoon, collapse of the Amazon rain forest and the Greenland ice sheet will meltdown," he said.
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Combating climate change may not be a question of who will carry the burden but could instead be a rush for the benefits, according to new economic modeling presented at “Climate Change: Global Risks, Challenges & Decisions” hosted by the University of Copenhagen.
Contrary to current cost models for lowering greenhouse gas emissions and fighting climate change, a group of researchers from the University of Cambridge conclude that even very stringent reductions of can create a macroeconomic benefit, if governments go about it the right way.
“Where many current calculations get it wrong is in the assumption that more stringent measures will necessarily raise the overall cost, especially when there is substantial unemployment and underuse of capacity as there is today”, explains Terry Barker, Director of Cambridge Centre for Climate Change Mitigation Research (4CMR), Department of Land Economy, University of Cambridge and a member of the Scientific Steering Committee of the Congress.
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