How Paved Surfaces Keep the City Warmer (IMAGE) U.S. National Science Foundation Caption Paved surfaces in the Houston area keep the city warmer than more natural surfaces. Credit UCAR 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.