It鈥檚 been an environmental quandry for years: what to do hog waste in North Carolina.
The state is home to nearly 9 million hogs, which produce massive amounts of waste.
Some of it goes back onto the farms of eastern North Carolina as fertilizer, but much of it is stored in open-air lagoons, which have been known to contaminate groundwater and produce a putrid smell for nearby homes.
exists to convert the waste into energy but it is not affordable for most hog farmers.
Host Frank Stasio talks with National Geographic contributor , who has examined alternatives to hog waste lagoons in her latest article,
