The hemp seedlings in Ben Holmes' warehouse in Lafayette, Colo., will be ready for harvest in about 50 days. Holmes says that during the peak growing season, the little sprouts can shoot up several inches each day. Luke Runyon/KUNC/Harvest Public Media hide caption

itoggle caption Luke Runyon/KUNC/Harvest Public Media

Clint Muhlfeld, an aquatic ecologist with the USGS, holds a native Westslope cutthroat trout in Glacier National Park. Noah Clayton/USGS hide caption

itoggle caption Noah Clayton/USGS

Farmworkers pull weeds from a field of lettuce near Gonzales, Calif. Salinas Valley farms like this one rely on wells, which haven't been affected much by the drought. George Rose/Getty Images hide caption

itoggle caption George Rose/Getty Images