US: On Tuesday, a conference at the NASA's Ames Research Center in California discussed how to use drones without putting our safety or privacy at risk. Amazon came up with a plan for how drones can fly safely over our skies. Gur Kimchi, vice president of Amazon Prime Air, suggests creating dedicated superhighways for drones. Kimchi wants that airspace under 200 feet should be given to surveillance and inspection drones. Between 200 and 400 feet would be a highway for drones conducting mapping or delivery operations. And the airspace between 400 and 500 feet should be left empty as a buffer zone between drones and planes.