Watching the Arctic thaw in fast-forward

The frozen permafrost in the Arctic is thawing on an alarming scale. By analyzing an annual record of satellite images, researchers have now confirmed these findings: thermokarst lakes in Alaska are draining one by one because warmer and wetter conditions cause deeper thaw, effectively weakening frozen ground as a barrier around lakes. In the season 2017/2018, lake drainage was observed on a scale that scientists didn’t expect until the end of the century.
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