The Port Authority has an update about the under construction One World Trade Center at Ground Zero: It's reached 52 floors. The building formerly known as former Freedom Tower is 104 floors total, so it's halfway to the top. When we visited the building in April, it was just at 24 floors.

One World Trade Center is expected to open in 2013; among its tenants will be publishing behemoth Conde Nast and Chinese real estate company Vantone.