Three things you should know about permafrost

As permafrost—the frozen soil layer beneath 15% of Northern Hemisphere land—thaws due to rising global temperatures, microbes break down long-frozen organic material and release greenhouse gases. This process creates a feedback loop that accelerates climate change. MIT Technology Review reports on efforts to address intensifying fires threatening permafrost and research into understanding the complex climate effects of this thaw.

Summary and key points written by AI from the headline and a short excerpt, so they can be incomplete or wrong. MIT Technology Review did the reporting; read the original for the full story.