The director of a UK science facility says scientists there will try to set a new world record in nuclear fusion.

The Jet experiment in Oxfordshire was opened in 1984 to understand fusion - the process that powers the Sun.

Prof Steve Cowley told the BBC a go-ahead to run Jet at maximum power would allow scientists to try for the record by the end of the decade.

This could bring Jet up to the coveted goal of "breakeven" where fusion yields as much energy as it consumes.

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