Bering Sea winter ice shrank to its lowest level in 5,500 years in 2018
Five millennia of climate shifts impacting the ice is recorded in peat from an Arctic island
![Bering Sea ice](https://i0.wp.com/www.sciencenews.org/wp-content/uploads/2020/09/090220_cg_beringsea_feat.jpg?fit=1028%2C579&ssl=1)
The Bering Sea (shown) may be ice-free year-round by the end of the century. A new study finds that increasing climate-altering CO2 can lead to reduced ice in the winter as well as the summer.
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