Southwest Landscape (IMAGE) University of Arizona Health Sciences Caption Researchers in the Southwest Environmental Health Sciences Center study the effects of environmental exposures to humans, particularly in arid climates. Credit Alli Benjamin, APR 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.