Agence France-Presse: The challenge posed by climate change could be resolved by a peaceful switch to a low-carbon economy, or alternatively inflict stresses that could include war and desertification of swathes of the US and Australia, a thinktank said on Monday. The provocative report is published by a British NGO, Forum for the Future, which carries out strategic analysis on sustainable development on behalf of business. It sketches a wide range of social consequences from today’s global warming …