The skies above U.S. nature reserves will get a little quieter if the National Park Service has its way. The agency is looking to ban drones from 84 million acres of public lands and waterways because they annoy visitors, harass wildlife and threaten safety, according to Jonathan Jarvis, the park service's director. Two national parks — Grand Canyon in Arizona and Zion in Utah — have already changed their rules on drones, but each park will have to revise its regulations if a nationwide ban is to be enforceable.
