Aerial Views (IMAGE) U.S. National Science Foundation Caption These are aerial views of San Diego; Miami; Philadelphia; Chicago; Phoenix; and Levittown, N.Y. Credit Credit: N. Giner, Clark University 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.