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06/12/2008

Matt Baker finds out about a new project to revive the hydroelectric plant at Grassington in Yorkshire and others like it using a 2,000-year-old invention called Archimedes' Screw.

28 minutes

Last on

Thu 11 Dec 2008 13:30

Broadcasts

  • Sat 6 Dec 2008 06:07
  • Thu 11 Dec 2008 13:30

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