3 World Trade Center, NYC’s 5th Tallest Building, Debuts After Delays The September 11, 2001 terror attacks took nearly 3,000 lives in New York City. By Madina Toure
Reengineering Elevators Could Transform 21st-Century Cities New technology could make it practical to build skyscrapers far taller than even today's highest – and change how people live, work and play in tall buildings. By Antony Wood and Dario Trabucco
The Mall Isn’t Dead—It’s Just Changing Cities are looking for ways to build compact, transit-oriented, lucrative developments. By Stefan Al