At the edges of large glaciers, close to where they met the sea ... it could speed up how fast the Greenland Ice Sheet melts. 'The acceleration of the ice sheet could in turn lead to several ...

As the ice speeds up, they can be metres in ... the crevasses on the surface began to close – offsetting increases across the rest of the ice sheet. This slowdown was short-lived.

As the ice speeds up, they can be metres in diameter ... As it did this, the crevasses on the surface began to close – offsetting increases across the rest of the ice sheet. This slowdown was ...