September 7, 2016, 6am PDT
A year of political obsession with walls along national borders has Chuck Wolfe contemplating city gates of the past and present. Using the foil of proposed border walls, he examines the historic role of city gates, modern gateways, and more.
October 6, 2010, 5am PDT
Small enclaves of low-wage workers in Beijing have been walled off from their surroundings in an effort to reduce crime. The separating walls have become a local controversy.