2010-07-09

Dead Zone in Gulf Linked to Ethanol Production. By Carolyn Lochhead, San Francisco Chronicle, July 6, 2010. “While the BP oil spill has been labeled the worst environmental catastrophe in recent U.S. history, a biofuel is contributing to a Gulf of Mexico ‘dead zone’ the size of New Jersey that scientists say could be every bit as harmful to the gulf. Each year, nitrogen used to fertilize corn, about a third of which is made into ethanol, leaches from Midwest croplands into the Mississippi River and out into the gulf, where the fertilizer feeds giant algae blooms. As the algae dies, it settles to the ocean floor and decays, consuming oxygen and suffocating marine life. Known as hypoxia, the oxygen depletion kills shrimp, crabs, worms and anything else that cannot escape. The dead zone has doubled since the 1980s and is expected this year to grow as large as 8,500 square miles and hug the Gulf Coast from Alabama to Texas… The ethanol boom over the past decade has lured farmers to withdraw millions of acres from the Conservation Reserve Program, which pays farms not to plant fragile land. Much of this land has been returned to native prairie grasses, at taxpayer expense. Millions more acres are up for renewal over the next few years.”

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