Fusion energy device sets a record by running for 20 seconds

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There’s a lot of work left. KSTAR’s ultimate goal is to run non-stop for five minutes at the extreme temperature by 2025. The breakthrough is an important step in that direction, though, and could prove vital if fusion reactors are to become a practical reality. That, in turn, could help the planet by further reducing the dependence on coal and other CO2-heavy energy sources.

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