Slippery slope

Three for the road.
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"We didn't realise that the water under these ice streams was moving in such large quantities, and on such short time scales. We thought these changes took place over years and decades, but we are seeing large changes over months. The detected motions are astonishing in magnitude, dynamic nature and spatial extent," Dr Fricker said.

The study was conducted using the Icesat satellite,600 kilometres up in space.

How will this influence the movement of ice toward the sea? They don't want to say yet, but..."It's essentially the grease on the wheel," said Professor Bindschadler.