Thawing Arctic permafrost is releasing ancient methane, a potent heat-trapping gas that has been locked in frozen ground for thousands of years. As the soil warms, that gas is slowly seeping out and adding to atmospheric greenhouse gas concentrations, making the planet warmer and causing more permafrost to thaw. This story from the Associated Press, carried by WUSA9, explains the basics of that feedback loop and why it matters for climate projections. For anyone following carbon markets or climate policy, this is a useful reminder that not all emissions come from smokestacks or tailpipes. Natural systems can become major emitters as temperatures rise. The article does not offer a fix, because there is not an easy one. The practical takeaway is that reducing human-made emissions becomes more urgent when natural sources start to add to the load.
