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Is ITER the most expensive science gamble of all time?

13 December 2011 Last updated at 09:48 GMT

Despite Europe's economic problems, members of the European Parliament have approved more public money for one of the most expensive scientific gambles of all time.

The International Thermo-nuclear Experimental Reactor, or ITER, is designed to prove that it's possible to produce environmentally-friendly energy through nuclear fusion.

Paul Henley reports