Associated Press: At a tumultuous time in U.N.-led climate negotiations, one of the world’s most credible scientific groups agreed Wednesday to plug the recent cracks in the authoritative reports of the United Nations’ Nobel Prize-winning global warming panel. "We enter this process with no preconceived conclusions," said Robbert Dijkgraaf, a Dutch mathematical physicist who co-chairs the group, the InterAcademy Council of 15 nations’ national academies of science. U.N. Secretary-General Ban …