A breakthrough in nuclear fusion has been announced by US scientists, bringing us a step closer to a potential source of near-limitless clean energy.

Physicists have pursued the technology for decades as it promises a potential source of near-limitless clean energy.

On Tuesday researchers confirmed they have overcome a major barrier – producing more energy from a fusion experiment than was put in.

But experts say there is still some way to go before fusion powers homes.

Nuclear fusion is described as the “holy grail” of energy production.

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