Researchers just overcame a key barrier to fusion power

One promising approach to nuclear power is a type of reactor called a tokamak, which uses powerful magnetic fields to trap super-heated plasma in a bagel-shaped torus. An obstacle to making tokamak reactors viable is that the plasma gets extremely hot, reaching temperatures of up to 100 million degrees Celsius — as hot as the Sun. But according to Reuters, U.K. researchers say they’ve finally found a way to vent that heat safely.
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