Gary Paul Nabhan is a contributor to Writers on the Range, a service of High Country News, based in Paonia, Colo. He is co-author of The Forgotten Pollinators and grows butterfly-attracting gardens and native food crops at his home near Tucson, Ariz. He is also author of Where Our Food Comes From: Retracing Nikolay Vavilov's Quest to End Famine . 
