Marc Lefkowitz is a sustainability consultant with more than 15 years of experience writing, speaking and advocating for a more sustainable Northeast Ohio. He served as Director of the GreenCityBlueLake Institute and editor of its well-known blog at gcbl.org. He has a B.A. in English from Ohio State University and an M.A. in urban planning from Cleveland State University. He is a regular bike commuter and transit rider. Photo: Liz Cooper.