![A cryostat that housed a high-temperature superconducting magnet that is a prototypical for fusion device at the MIT Plasma Science and Fusion Center in Cambridge, MA on December 13, 2021. Scientists are building machines to harness fusion energy. (David L. Ryan/The Boston Globe via Getty Images)](/sites/default/files/styles/16_9_sm/public/2024-09/GettyImages-1237399643.jpg?h=17e83d0d&itok=tNyJBOoO)
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A cryostat at the MIT Plasma Science and Fusion Center in Cambridge, MA on December 13, 2021. (David L. Ryan/The Boston Globe via Getty Images)
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