Human Construction (IMAGE) Florida Atlantic University Caption A small beachfront area shows where human construction occupies and squeezes the space of tidal flats. Credit Chao Xu, Ph.D. Usage Restrictions Credit: Chao Xu, Ph.D. 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.