Reuters: The science on climate change is indisputable so the world must now act to limit greenhouse gas emissions or face “abrupt and irreversible” change, the head of the Nobel prize-winning U.N. climate panel said on Sunday. But Rajendra Pachauri, head of the United Nation’s Intergovernmental Panel on Climate Change (IPCC), said the industrialized world did not have a moral right to force poorer nations to slash emissions that may stunt their growth. “The science is …