After 30 Years, Environmental Protection Needs an Overhaul

A vast "dead zone" stretches for some 6,000 square miles in the Gulf of Mexico off the coast of Louisiana. Much of the sea life that would normally inhabit the area has perished or fled.

Scientists have known for decades what has created the dead zone -- the heavy influx of pollutants, much of it in the form of agricultural runoff, that has poured down the Mississippi and Atchafalaya Rivers into the Gulf. But no one has been able to do much about cleaning up the mess.

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