Pinyons (IMAGE) U.S. National Science Foundation Caption Evergreen pinyon pines turn brown from drought (left). A year later, pine needles are gone (right). Credit USGS 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.