Scotsman: IT IS “improbable” global warming will be kept below 4C – double the rise considered safe to avoid climate catastrophe – according to an influential new report. Internationally, it has long been agreed governments should be aiming to keep a global temperature rise below 2C, to avoid climate change spiralling out of control. However, a bleak new study by scientists at the Tyndall Centre, a leading organisation for climate change research at the University of Manchester, now …