'It was like an apocalyptic movie': 20 climate photographs that changed the world

For a week in July 2018, a giant 100m-tall iceberg loomed over a tiny village on the west coast of Greenland. Villagers were evacuated, and the world watched in suspense: if a chunk of the 10m-tonne iceberg had broken apart or "calved", it would have caused a tsunami and obliterated the settlement of Innaarsuit.

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