Greenland glacier rapidly melting with the tides could signal more dramatic rise in sea levels worldwide

Tidal flushing’ at Petermann Glacier may also be taking place at glaciers in Antarctica

Scientists Andreas Muenchow, left in the distance, and Keith Nicholls, right, working on the Petermann glacier in 2016. Photo: Washington Post© The Washington Post

Chris MooneyWashington Post

Scientists studying one of Greenland’s largest glaciers say it is melting far faster than expected in its most vulnerable region, a worrying sign that glaciers perched in the ocean could contribute to sea-level rise more quickly than currently forecast.