Tumamoc Hill, Tucson, Ariz. (image) University of Arizona Caption Researchers from Larry Venable's lab at the University of Arizona have been studying how climate affects the growth of winter annuals since 1982. This picture shows part of the study site, which is at Tumamoc Hill in Tucson, home of UA's Desert Laboratory. Credit Copyright 2005 Kathy Gerst. Usage Restrictions The photo, Tumamoc Hill, Tucson, Ariz., may only be used to illustrate a story about the research described in the accompanying news release, Warming Climate Chills Sonoran Desert's Spring Flowers. 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.