Complex Models Now Gauge the Impact of Climate Change on Global Food Production. The Results Are ‘Alarming’

Inside dozens of bankers boxes, stacked high in a storage locker in New York City, Cynthia Rosenzweig has stashed the work of decades: Legal pads covered in blue-inked cursive with doodles in the margins, file folders marked “potato,” graph paper with notations of rainfall in Nebraska and Kansas. Rosenzwei...