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.

  • kombizz

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

How does a bowling alley work?

Any bowling alley works through a combination of a wooden or synthetic lane flanked by semicylindrical gutter channels, an automated pinsetter machine and ball sorter, and a return ball gully and stacker