Australian Antarctic Division New research shows that ‘explosive’ cyclones off Antarctica, caused by increasing extreme atmospheric events, can contribute to ice shelf calving and, ultimately, sea level rise. This series of MODIS satellite images show a major rift moving in the direction of ice flow on the Amery Ice Shelf, with radial rifts extending west (T1) and east (T2) from the main rift. After two explosive twin cyclone events on the 19th and 21-24 September 2019, wind and wave action caused the T1 rift to expand, leading to the calving of iceberg D28 from the shelf front on 25 September – the largest local calving event since the early 1960s. Photo: NASA Worldview