Irrigation’s climate benefit could equal 363 years of its own emissions

U. S. irrigation produces some greenhouse gas emissions, but new research suggests it prevents vastly more by allowing farmers to grow more food on less land. Without irrigation, replacing lost crop yields could require converting natural ecosystems into farmland, releasing an estimated 6. 86 gigatons of greenhouse gases. That is equivalent to about 363 years of current annual U. S. irrigation emissions.