Dead Conifers (image) University of Utah Share Print E-Mail Caption Trees killed by drought in the American Southwest during the 2000s. Credit Courtesy William Anderegg. Usage Restrictions Credit William Anderegg Share Print E-Mail 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.