International Herald Tribune: The Great Warming Climate Change and the Rise and Fall of Civilizations By Brian Fagan Bloomsbury Press. $26.95. 282 pages. If you don’t think climate change produces winners as well as losers, consider this: In the 12th and 13th centuries England exported wine to France. Vineyards also flourished in improbable regions like southern Norway and eastern Prussia. A centuries-long spell of mild, predictable weather blessed Western Europe with abundant crops, healthy populations …