Urban ecology and climate change (IMAGE) Arizona State University Caption For the past 25 years, scientists at ASU have been studying the Phoenix metropolitan area as an ecosystem in the Central Arizona-Phoenix Long Term Ecological Research (CAP LTER) project. Their findings have offered insights into the well-being of our own desert landscape as well as desert cities worldwide, which are home to a third of the world’s population. Credit ASU Usage Restrictions None License Original 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.