Violent Connection (IMAGE) Columbia Climate School Caption El Nino drought cycles heavily affecting some 90 countries (red) appear to be helping drive modern civil wars. Credit Courtesy Hsiang et al./Nature Usage Restrictions None 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.