Arctic region was permafrost-free when global temperatures were 4.5˚C higher than today, study reveals
Thursday, July 3, 2025 - 12:48
in Earth & Climate
Scientists have found evidence that the Asian continent was free of permafrost all the way to its northerly coast with the Arctic Ocean when Earth's average temperature was 4.5˚C warmer than today, suggesting that the whole Northern Hemisphere would have also been free of permafrost at the time.