[Washington Post]Mexico’s wheat fields help feed the world. They’re also releasing a dangerous greenhouse gas.
CIUDAD OBREGÓN, Mexico — In the foothills of the Sierra Madre mountains, the carcasses of starving cattle rotted in a bone-dry reservoir. Useless fishing nets hung on dusty fences. Rowboats were stranded in the sand.Down on the valley floor, Rafael Parra bent to the work of feeding the world ...