I Looked at the New Cold Fusion Breakthroughs. It's Complicated.
Sabine Hossenfelder
May 23, 2026 15:00
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Investors across the globe are putting record amounts of money into cold fusion technology, which promises to bring us nuclear fusion without the need to create miniature stars on Earth. But are these companies actually delivering, or is this just another speculative tech bubble? Let’s take a look.
Paper: https://www.nature.com/articles/s41586-025-09042-7
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