New research indicates that a glacier in Patagonia, previously considered the most stable in the region, is experiencing ice loss at rates much higher than earlier estimates. Meanwhile, in Alaska, the Mendenhall Glacier is causing an imminent flooding threat due to the release of a large basin of rainwater and snowmelt dammed behind an ice dam. Authorities have declared a disaster and urged residents in parts of Juneau to evacuate in anticipation of a potentially record-breaking surge of floodwater downstream. This situation is part of broader patterns of glacial retreat and melting, including Greenland’s most active glacier, which is retreating and contributing to ecological changes in the ocean by lifting nutrients to the surface, thereby supporting phytoplankton growth that helps absorb carbon dioxide and sustain global fisheries.