Robots are taking our jobs: Drones repairing wind turbines

For now, jobs in the clean energy sector are some of the fastest-growing in the world. Alas, even that won't last. As we fast approach a half-million wind turbines, there is a growing need to maintain them. A new fleet of drones are now taking the responsibility to inspect, clean, and repair the turbines using using a modular tool that can fix surfaces, apply protective coatings, and more.