Worsening Effects (IMAGE) Columbia Climate School Caption Drought periodically causes widespread food insecurity across much of sub-Saharan Africa, and may exacerbate the effects of warfare. Here, farmers in the village of Diouna, southern Mali, listen for weather bulletins. Credit Francesco Fiondella/International Research Institute for Climate and Society Usage Restrictions Credit must be given. License Original 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.