Environment ❯ Climate Change

Arctic

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Study Finds Permafrost Thaw Is Creating Acidic, Metal‑Rich ‘Orange’ Rivers in Alaska

A peer‑reviewed analysis says thawing ground is releasing acid rock drainage that can carry high metal loads far downstream and warrants continued monitoring

Arctic Winter Sea Ice Returns to Significant Decline

Arctic Winter Sea Ice Matches Record Low for Second Year, NASA and NSIDC Report

Svalbard Polar Bears Fatten Even as Sea Ice Shrinks, Study Finds

NOAA’s 2025 Arctic Report Card: Hottest Year on Record, Record-Low Winter Sea Ice

Study Finds Nitrogen Fixation Under Arctic Sea Ice, Led by Non‑Cyanobacterial Microbes

Arctic Sea Ice Hits 2025 Minimum, Tying 10th-Lowest Extent on Record

Permafrost Thaw Is Turning Alaska’s Salmon River Toxic, PNAS Study Finds

Nature Review Finds Abrupt, Interlinked Antarctic Shifts With Global Consequences