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James Hansen said feedbacks in the climate system are already accelerating ice melt and are threatening to lead to the collapse of ice sheets. Sea-level rises will therefore be far greater - a likely figure for sea-level rise will be about 1.4 meters, enough to cause devastating flooding of many of the world's major cities and of low-lying areas of Holland, Bangladesh and other nations.

As a result of his fears about sea-level rise, Hansen said he had pressed both Britain's Royal Society and the US National Academy of Sciences to carry out an urgent investigation of the state of the planet's ice-caps. However, nothing had come of his proposals. The first task of Obama's new climate office should therefore be to order such a probe "as a matter of urgency", Hansen added.

Cap-and-trade schemes, in which emission permits are bought and sold, have failed, he said, and must now be replaced by a carbon tax that will imposed on all producers of fossil fuels.
http://www.guardian.co.uk/environment/2009/jan/18/jim-hansen-obama

Dr. Stephen R. Humphrey, Director of Academic Programs,
School of Natural Resources and Environment,
Box 116455, 103 Black Hall, University of Florida
Gainesville, FL  32611-6455  USA
Tel. 352-392-9230, Fax 352-392-9748
http://snre.ufl.edu<http://snre.ufl.edu/>