"What a difference a degree makes. From the tenth to the fifteenth century the earth experienced a rise in average temperature that changed climate worldwide - a preview of today's global warming. As archaeologist Brian Fagan shows in these pages, subtle shifts in the environment had far-reaching effects on human life." "Fagan unfolds both a scientific detective story, showing how centuries-old weather patterns can be reconstructed from scattered clues, and a vivid and timely historical narrative. A study of the first Great Warming suggests we may yet be underestimating the power of climate change to disrupt our lives today."--BOOK JACKET.
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