As glacial ice flows, stress fractures that run tens of metres deep form in the glacier’s surface (pictured). These crevasses increase the rate of ice movement, which creates more cracks in a self-reinforcing loop that has the potential to exacerbate ice loss from the land and contribute to rising sea levels. Writing in Nature Geoscience, Chudley et al. report that in most parts of Greenland, ice crevasses in glaciers are getting deeper and larger — and this is happening more quickly than previously estimated (T. R. Chudley et al. Nature Geosci. https://doi.org/n5bg; 2025).
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