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martes, 24 de mayo de 2016
A human powered helicopter successfully hovered for 64 seconds at a height of 3 meters, winning a prestigious $250,000 prize
https://www.youtube.com/watch?v=syJq10EQkog
Submitted May 24, 2016 at 05:59PM by SquashyDisco http://ift.tt/1YWLh5X
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