• HUR SVÅRT KAN DET VARA?

  • VIDEO

  • Lift off! show

    Lift off!

    It's not a bird, it's not a plane. It's a house, and it's flying across the sky.

    (00:59)
  • An engineer's dream job show

    An engineer's dream job

    Meet an engineer who set up an experiment to find out how many balloons it takes to lift a house.

    (01:09)
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National Geographic Channel