Scientists trace the eerie signal to a Greenland megatsunami
In September 2023, a colossal landslide in Greenland’s Dickson Fjord triggered a megatsunami, causing the entire planet to vibrate every 90 seconds for nine days. An unprecedented seismic hum was detected worldwide. Satellites have now unveiled the cause: resonant fjord oscillations. A 25.5 million cubic metre rockslide, driven by climate change-induced glacial melt, plunged into…