At a science conference in Copenhagen this week, there’s a “last call” for scientists who want to present evidence in the case for global warming. American, British and other European scientists will present latest scientific findings on climate change since the IPCC (Intergovernmental Panel on Climate Change) report in 2007. This is in part an attempt to encourage an international climate treaty in December in Copenhagen. Joining The Takeaway from Copenhagen is BBC Environmental Correspondent Matt McGrath.