By by Roberta Harrington in Los Angeles Fusion, the holy grail of the energy transition, is closer than ever before. But it’s still unclear whether it can be commercialised in time to ward off the climate crisis. Earlier this month, a ‘tokamak’ fusion reactor in the UK was announced to have set a global record for the amount of power created. The experiment had occurred in December. Tokamak is the most mature of fusion technologies, and has been seen as a good contender to be the first technology to be commercialised. The running joke amongst scientists still is that fusion – which creates no …