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A Science study of the Barnes Ice Cap provides direct physical evidence that the Laurentide Ice Sheet began re-expanding about 2,000 years ago as a new glaciation started — until human-caused warming reversed the trend around 1960.
MIT Technology Review's daily newsletter highlights a feature on the future limits of computing beyond shrinking transistors, alongside reporting from Alaska on Arctic fires threatening thawing permafrost and its climate impact.
MIT Technology Reporting highlights three key takeaways from new coverage of permafrost: it is a major blind spot in climate models, accelerating Arctic wildfires can speed its thaw, and its carbon cycle is far more complex than current projections account for.