The SciencesParched Turf BattleDid climate changes cause civilizations to collapse?By Daniel Grossman on December 1, 2002AdvertisementABOUT THE AUTHOR(S)is a freelance writer in Watertown, Mass.Recent Articles by Daniel GrossmanThis Researcher Captured Air from the Amazon in Dive-Bombs--And Found Grim Clues That the Forest Is DyingPeru's Peatlands Could Greatly Accelerate Global WarmingSpring Forward