nearly $2 billion of private money into commercial fusion companies: several in the United States, one in Canada and two in Britain.In terms of expertise and infrastructure, the UK is near the front of the peloton in this technology.
The recent progress is mainly because of technical breakthroughs. In one design, called magnetic confinement, better superconductors have led to stronger magnets needing less cooling which allows more compact, spherical designs that can stabilise the “plasma” for longer spells of time.
In another, inertial confinement, lasers developed for the star-wars missile defence programme have brought ignition temperatures within reach.Before you get cynical, indulge in a bit of hope.
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