RANKING SUSTAINABILITY n What U.S. Cities Can Lear From European Peers Annual Arcadis study reveals how U.S. cities stack up against global counterparts and the pivotal role engineers play in boosting U.S. competitiveness BY ALAN JOCH Based on three sustainability dimensions-quality of life, green factors and economic health-Zurich ranked No. 1 in the 2016 Arcadis Sustainable Cities Index. 52 ENGINEERING INC. MAY / JUNE 2017