Soil acidity and copper contamination can increase nitrous oxide emissions, a potent greenhouse gas. By adjusting soil pH and adding dolomite, researchers found that N2O emissions decreased, even in the presence of copper. The addition of copper led to higher N2O emissions, but this effect was mitigated by increasing soil pH. This study shows that managing soil pH can help reduce the harmful effects of heavy metal contamination on soil microorganisms and greenhouse gas emissions.