(NPR) — On most pig farms, manure flows into big poop lagoons, which emit methane gas into the air.
That's a problem because methane contributes to overheating the planet.
But some farms are capturing the gas and turning it into a usable zero-carbon fuel.
Two large companies plan to capture natural gas from manure-filled ponds, turning it into clean, climate-saving energy. But some neighbors just want the ponds gone.