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Season Finale

How Do They Do It?: Season 12

12x20 Power Tunnel; Pizza Ovens; Playhouses
TV-G

  • 2015-10-02T02:00:00Z on Discovery
  • 22m
  • United States
  • English
  • Documentary
How electricity is delivered in London. Also: using NASA technology to make a perfect pizza in minutes; and turning pine trees into playhouses.
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