Hidden Earthquakes Discovered at Antarctica's Doomsday Glacier

Scientists have detected hundreds of previously overlooked seismic events beneath Antarctica, including 245 near the Thwaites Glacier. These events appear to be glacial earthquakes caused by the break-off and collision of huge icebergs. The surge in activity coincided with a period when Thwaites was flowing faster toward the ocean, suggesting that changing ocean conditions may be destabilizing the ice. The discovery provides new insights into the dynamics of the glacier, which is considered a key contributor to global sea-level rise.