This Drone's Feathered Wings Can Open and Close Like a Bird's

Aeronautical engineers have built planes that can streak across the sky at over 4,000 miles per hour, but still haven’t come close to designing aircraft that can maneuver with the astounding agility of a bird. Researchers at Switzerland’s École Polytechnique Fédérale de Lausanne figured, if you can’t beat ‘em, join ‘em

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