Energy & Sustainability The Efficient City Municipalities worldwide are exploiting a host of creative solutions to reduce energy consumption, water use, waste and emissions, while also making it easier for people to get around By Mark Fischetti THIS IS A PREVIEW. Buy this digital issue or subscribe to access the full article. Already have an account? Sign In Illustration by Bryan Christie Wave Power Hinged cylinders anchored in the seafloor are pushed by waves, turning onshore turbines that create electricity (Orkney, Scotland) THIS IS A PREVIEW. Buy this digital issue or subscribe to access the full article. Already have an account? Sign In Digital Issue $7.99 Add To Cart Digital Issue + Subscription $39.99 Subscribe ADVERTISEMENT Scientific American is a trademark of Scientific American, Inc., used with permission © 2015 Scientific American, a Division of Nature America, Inc. All Rights Reserved.