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Global warming caused by human-produced greenhouse gases is causing the Arctic ice cap to melt at an increasing rate.

From 1953–2006, Arctic sea ice declined 7.8% per decade. Between 1979 and 2006, the decline was 9.1% each decade. [105] By 2019, Arctic sea ice was being lost at a rate of 12.9% per decade. [163] As the Arctic ice cover continues to decrease, the amount of the sun’s heat reflected by the ice back into space also decreases. This positive-feedback loop amplifies global warming at a rate even faster than previous climate models had predicted. [30] Some studies predicted the Arctic could become nearly ice free sometime between 2020-2060. [164]

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