The document summarizes a presentation given at the Global Forum 2011 in Brussels on making cities models of sustainable communities. It argues that cities should be the focal point for sustainability by becoming experts in green plans leveraging information and communication technologies, like developing wind farms, solar roofs, green roofs, smart transit, and smart grids. This would allow cities to improve quality of life, seek ecological balance, and create economic opportunities for entrepreneurs in sustainable, digitally-enabled industries.