Extreme heat is forcing America’s farmers to go nocturnal

Mark Hines’s workday starts while the sun sets, when the grass grows heavy with dew and the bugs are as loud as they are close. His friends call him the ”Night Farmer.”

While others sleep, Hines roams his Derwood, Md., farm from 9 p.m. to 2 a.m., picking tomatoes, melons, pumpkins and lettuce by the light of a headlamp and well after the heat of the…