Hobby drones are becoming a new kind of headache for air traffic controllers. The future of drone traffic is such a big concern, NASA is already working on a system to manage it.
Desalination facilities are under construction across California that would make ocean water drinkable. Environmentalists debate whether more plants would only worsen long-term water issues.
The artificial cave could house hundreds of thousands of bats, helping them escape a devastating infection called white-nose syndrome. As bats continue to die off, scientists are seeking quick and effective ways to protect them from an invasive fungus that grows naturally in caves.