An innovative on-demand medical service in Rwanda is using drones to cut hours of delivery time into minutes, when every second counts. Photo: Robert Lee HotzMUHANGA, Rwanda—Long before the drone flew into view, the nurse standing in the driveway at Kabgayi Hospital in central Rwanda could hear its mosquito whine. As it soared overhead, the small airship ejected a red cardboard box tethered to a wax-paper parachute that drifted to the pavement. Inside were three bags of human blood platelets that the nurse rushed to the hospital’s transfusion center, where they were needed for an emergency. A delivery that hospital officials say normally takes three hours or more in local traffic...

Source: Wall Street Journal December 01, 2017 10:30 UTC