Science & Nature

The Sun in a Bottle

After 70 Years of Research, Nuclear Fusion Is Finally Approaching Commercial Reality

Dennis Whyte

Plasma physicist and former director of the MIT Plasma Science and Fusion Center, specializing in magnetic confinement fusion and the development of high-temperature superconducting magnets.

February 22, 2026·10 min read

The Sun in a Bottle

Nuclear fusion — the process that powers the sun — has been "30 years away" for the past 70 years. But recent breakthroughs, including the first fusion reaction to produce more energy than it consumed, have renewed optimism that fusion power could become a reality within this decade. The implications for clean energy would be transformative.

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nuclear fusionclean energyphysicsclimate changetechnology

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