Financial Times: The Great Warming: Climate Change and the Rise and Fall of Civilizations By Brian Fagan Bloomsbury $26.95, 282 pages Now that global warming and climate change are established facts, however inconvenient, we are all starting to ponder what will happen to our particular corner of the planet in the next few decades. One approach is through the computer models used by the Intergovernmental Panel on Climate Change (IPCC) in their influential scientific reports. Another is to …