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The Conversation
The Conversation
Science
Ted Scambos, Senior Research Scientist, CIRES, University of Colorado Boulder

Ice world: Antarctica's riskiest glacier is under assault from below and losing its grip

The front of Thwaites Glacier is a jagged, towering cliff. David Vaughan/British Antarctic Survey

Flying over Antarctica, it’s hard to see what all the fuss is about. Like a gigantic wedding cake, the frosting of snow on top of the world’s largest ice sheet looks smooth and unblemished, beautiful and perfectly white. Little swirls of snow dunes cover the surface.

But as you approach the edge of the ice sheet, a sense of tremendous underlying power emerges. Cracks appear in the surface, sometimes organized like a washboard, and sometimes a complete chaos of spires and ridges, revealing the pale blue crystalline heart of the ice below.

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