Algae Fossils From a Warmer Arctic 6,000 Years Ago Point to Steeper Winter Sea Ice Losses Than Models Predicted

Nature World News | 29.10.2026 17:32
Arctic winter sea ice could end up about 1 million square kilometers (roughly 386,000 square miles) smaller in coming decades than climate models have projected, according to a new study that tested 27 models against chemical traces left by algae that lived in Arctic sea ice about 6,000 years ago. The research, led by the University of Cambridge and published in Nature Geoscience, found that the models as a group have been carrying too much winter ice.