Clark Drought Trees (IMAGE) Duke University Caption This is a picture of drought-induced dieback of ponderosa pines in California's Tehachapi Mountains as seen in June 2014. Credit Ian McCullough, Univ. of California Santa Barbara 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.