Managed Retreat (VIDEO) University of Delaware This video is under embargo. Please login to access this video. Caption New research from the University of Delaware's A.R. Siders and Katharine Mach, from the University of Miami, found that managed retreat can't be seen as a last resort -- it must be paired with existing (flood walls) or future (floating cities) measures to be effective. Credit Jeffrey C. Chase/ University of Delaware Usage Restrictions Must credit Jeffrey C. Chase/ University of Delaware 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.