Video: Coolest gadget ever!

For more information about the Parrot AR.Drone, including an interview with one of its designers, look out for issue five of How It Works.

  • http://www.pbase.com/profile kombizz

    it is amazing. I wonder how much does it cost?

Hoover Dam structure

How It Works explores one of the world’s greatest engineering feats. The structure of the Hoover Dam explained after the jump

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