This summer’s Arctic sea-ice shrank to its second lowest ever extent in the era of satellite observation.

The floes withdrew to just under 3.74 million sq km (1.44 million sq miles) last week, preliminary data indicates.

The only time this minimum has been beaten in the 42-year spacecraft record was 2012 when the pack ice was reduced to 3.41 million sq km.

Shorter autumn days and encroaching cold mean the floes are now starting to regrow.

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Photo credit: MOSAIC/AWI/STEFFEN GRAUPNER