Independent (UK): You can look at the warming of Lake Tanganyika as a geographical and scientific curiosity; but you’re probably wiser to look at it with a considerable sense of foreboding. Africa may well be the region where global warming hits hardest in the coming century, a possibility clearly spelled out in the last report of the UN’s Intergovernmental Panel on Climate Change (IPCC) published in 2007. The "multiple stresses" include increased water shortages, severely compromised …