Agence France-Presse: Global warming rivals the Iraq War as the policy for which George W. Bush has been most savaged, with critics accusing him of braking or even sabotaging efforts to tackle climate change. But the chief US delegate at the UN climate talks here, in an interview on Wednesday, said Bush’s administration had shown “an evolution” over two terms and had made practical contributions in shaping the global debate. Paula Dobriansky, under secretary for democracy and global affairs, told …