Lance Nacio’s family has made its living fishing along the coast of Louisiana’s Terrebonne Parish for three generations. He’s continuing the family business, but it’s becoming increasingly difficult.

       Nitrogen and phosphorus are flowing from the Mississippi River Basin into the Gulf of Mexico, creating an oxygen-void area along southern Louisiana and eastern Texas over 18 times larger than Chicago.

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       Fish, shrimp and other commercial species swim farther from the coast to escape, and those that can’t move fast enough die. Fishermen must follow, spending more time and money to sail away from this “dead zone” with dicier odds of a good catch.