Roboticist Raffaello D’Andrea describes his work on three new autonomous flying machines, including one that “knows” what to do when it loses a propeller. (Hint: it doesn’t crash.)

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Fotokite is a drone-on-a-string. The unmanned aerial vehicle can be guided simply by the tug of a string. Inventor Sergei Lupashin explains how it works.

Andreas Raptopoulos of Matternet is attempting to create a network of drones that operate like the Internet, only for tangible objects.

Marc Goodman
 of the Future Crimes Institute and Singularity University shares his thinking on the promise — and threat — of drones.

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Watch how drones have been presented on the TED stage in various ways over 15 years.

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P.W. Singer directs the Center for 21st Century Security and Intelligence. He shares thoughts on drones and the future of war.

A BQM-74E aerial drone launches from the guided-missile frigate USS Thach (FFG 43) during a live-fire exercise in 2011. (Photograph by Mass Communication Specialist 3rd Class, Stuart Phillips/US Navy.)

Drones have a lot of people (and entire countries) hot under the collar. Here’s what you need to know about this type of warfare.