"What to Do About Pig Poop? North Carolina Fights a Rising Tide"

"The pork-loving state faces challenges in protecting water from contamination."

"On an overcast day in September, I was buzzing over eastern North Carolina's flat coastal plain in a single-prop Piper Arrow with retired riverkeeper Rick Dove and pilot Bob Epting. From an altitude of 1,200 feet (366 meters), we gazed down at the land of hogs: fields in every direction dotted with long, metal-roofed barns housing thousands of animals—and, shimmering in the faint sunlight, the pink ponds that held their waste.

The animals were destined to become honey-cured ham, bologna, smoked sausage, pulled pork, pork chops, bacon bits, and more. The meat would be shipped all over the world.

But before the hogs left the state, they would poop, a lot."

Sara Peach reports for National Geographic October 28, 2014.