Prof Martin Beniston
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Solar-powered boat is ideal for climate change research

6 September 2013 Last updated at 00:06 BST

The world's largest solar-powered boat has concluded a scientific expedition in London.

The MS Turanor PlanetSolar started its 2013 campaign by crossing the Atlantic in 22 days, beating its previous world record of 26 days.

It then became a research platform, as University of Geneva climatologist Professor Martin Beniston explains.