For more than 25 years, despite voluntary measures and regulations across six states and Washington, DC, the Chesapeake Bay, the nation's largest estuary, remains polluted, its tributaries largely unswimmable and unfishable. Agricultural runoff from farms in the region produces about half that pollution. While President Obama has issued an executive order to restore and protect the watershed, VOA's Rosanne Skirble reports that success depends largely on how the region's farmers respond.
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