Council on Tall Buildings and Urban Habitat (CTBUH) With 100,000 people moving into cities across the globe every day, the 21st century will truly be the century of the city. Humanity’s continued existence on this planet will rely on our ability to transform cities into dense, livable centers of innovation that reduce both land consumption and energy needs. In order to accommodate an additional 2.5 billion people in the world’s cities by 2050, the shapers of our urban landscapes will require guidance through access to expert research and resources that promote best practices for smarter cities. This is why the CTBUH’s mission is critical to promoting a better urban future. Headquartered in Chicago, the Council on Tall Buildings and Urban Habitat (CTBUH) is