These tiny drones can lift 40 times their own weight

The drones, called FlyCroTugs (short for “flying, micro tugging robots”), are equipped with a system of winches, adhesives and microspines that allow the tiny crafts, which weigh just a few ounces each, to latch onto just about anything. The winch is one of the few immovable parts of the highly customizable drone — just about …

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