More Rain (IMAGE) Columbia Climate School Caption Land at the northern edge of Africa's Sahel could become more suitable for farming if sulfur emissions in the United States continue to rapidly decline, says a new study. Here, farmers near Segou, Mali, plant maize at the start of the rainy season. Credit Francesco Fiondella/International Research Institute for Climate and Society, Columbia University Usage Restrictions Credit must be given. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.