![Lewis Pugh on X: "First sight of the glacial river that I'll be swimming. It may seem shocking that someone would be able to swim in a river that runs under the Lewis Pugh on X: "First sight of the glacial river that I'll be swimming. It may seem shocking that someone would be able to swim in a river that runs under the](https://pbs.twimg.com/media/EPCNx_3WkAEMEea.jpg)
Lewis Pugh on X: "First sight of the glacial river that I'll be swimming. It may seem shocking that someone would be able to swim in a river that runs under the
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Meltwater is infiltrating Greenland's ice sheet through millions of hairline cracks – destabilizing its structure
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