Physorg: Professor Charles Greene asserts in the journal Oceanography that the world’s policymakers have underestimated the potential dangerous impacts that man-made climate change will have on society. The world’s policymakers have underestimated the potential dangerous impacts that man-made climate change will have on society, said Charles H. Greene, Cornell professor of earth and atmospheric sciences. As one of the authors of “A Very Inconvenient Truth,” published in the …