A cool summer sees Arctic sea ice reach its 12th-lowest minimum extent on record
Sea ice is more extensive than in recent low years, but still far lower than historically — even as other markers, such as thickness and age, show declines.
September 22, 2021
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After a relatively cool and cloudy summer that slowed melt in some areas, Arctic sea ice has likely begun its winter freeze, the National Snow and Ice Data Center said on Wednesday.
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