Voice of America - A newly published scientific study says growing more corn to produce ethanol and reduce U.S. use of foreign oil could have a negative impact on marine life in the Gulf of Mexico.
The study, published Monday, says increased corn cultivation will worsen an expanding "dead zone" in the Gulf of Mexico. The water in the zone has so little oxygen in it that fish and crustaceans cannot live in it.
The 20,000 square - kilometer zone is caused by runoff of nitrogen fertilizer from corn-farming states in the midwestern United States. The runoff enters the Gulf of Mexico by way of the Mississippi River watershed.
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