The millions of "check-ins" generated by foursquare, the location-based social networking site, can be used to create a dynamic view of a city's workings and character, Carnegie Mellon University researchers say.

PITTSBURGH, Jan.

PITTSBURGH, Nov.

Mobile phone-based games could provide a new way to teach basic knowledge of Chinese language characters that might be particularly helpful in underdeveloped rural areas of China.

PITTSBURGH, Sept.