6 Crazy Drones You Won't Believe Exist

If the state of drones today is any indication, the time of I, Robot and The Terminator may be closer than we thought.

While militarized drones are the focus of huge controversy in the U.S. and around the world, consumer drones and other experimental projects are using the technology in fascinating ways.

From open-source underwater exploration to autonomous penguin-like blimps, we've collected some of the stranger drones being planned or already in existence today. Ranging in size from small, bird-sized flying machines to 15,000-ton naval destroyers, the loose definition of "drone" encompasses quite a few different types of vehicles, with extremely varying uses. Read more...