EurekAlert: Climate change, land-use patterns are culprits, scientists to report at Ecological Society of America conference What do the Gulf of Mexico’s "dead zone," global climate change, and acid rain have in common? They’re all a result of human impacts to Earth’s biology, chemistry and geology, and the natural cycles that involve all three. On August 4-5, 2009, scientists who study such cycles–biogeochemists–will convene at a special series of sessions at the Ecological Society of …