ClimateWire: The chief of the Intergovernmental Panel on Climate Change criticized the Group of Eight summit participants for ignoring the IPCC’s scientific findings and the declaration that emerged from the 2007 U.N. climate conference in Bali, Indonesia, in which leaders agreed to work toward a new treaty limiting average global temperature increase to 2 degrees Celsius. Though simultaneously praising the 2-degree commitment as “clearly a big step forward” in international talks, IPCC Chairman …