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Experts worry about lack of progress in efforts to reduce lifeless zone in the Gulf of Mexico

The water that tumbles out of the Mississippi River into the salty Gulf of Mexico has traveled thousands of miles. From its source in Minnesota, the river winds through 10 states on its journey to the ocean, collecting runoff from the Rocky Mountains, the Appalachian Mountains, and everywhere in between. The river flows through the fields of the Corn Belt, gathering fertilizer, and through cities, where sewage leaches into its currents.

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