Frozen, but not sealed: Arctic Ocean remained open to life during ice ages, study suggests

PHYSorg
Jul 4, 2025, 2:00 pm417 ptsTop
For years, scientists have debated whether a giant thick ice shelf once covered the entire Arctic Ocean during the coldest ice ages. Now, a new study published in Science Advances challenges this idea as the research team found no evidence for the presence of a massive ~1km ice shelf. Instead, the Arctic Ocean…

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