Independent (UK): Keeping the global temperature rise caused by climate change to C, which is widely regarded as the limit of what the Earth can safely stand, is going to be extremely difficult and will involve an enormous effort by the world, new research by British scientists indicates. The C target, first proposed by the European Union in 1996 and now seen as a norm, is likely to be adopted by the international community as a whole next week at the end of the UN climate conference in …