Nature, Published online: 28 January 2026; doi:10.1038/d41586-026-00030-z

A device has been built that relies on a solid-state phenomenon called the elastocaloric effect to produce cooling to temperatures below 0 °C, lower than existing room-temperature elastocaloric cooling systems are able to achieve. The innovation demonstrates that elastocaloric technology could offer an alternative to conventional freezing systems that use volatile greenhouse gases.

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