New research on Mollisols, the world's richest black farm soils, reveals a surprising trend. While warming typically accelerates carbon loss through microbial activity, the data shows a reversal point. When warming exceeds roughly 0.28 degrees Celsius per decade, some soils actually begin to regain carbon. This finding challenges standard climate models that assume a linear relationship between heat and carbon drain. The recovery may be driven by increased plant growth and root matter, though scientists are still confirming the exact mechanism. This could significantly alter carbon accounting for northern grain belts by 2050.
