Article Photos: Daughter fights for return of dad trapped in China 14/27

ADVANCE FOR USE MONDAY, MARCH 18, 2013 AND THEREAFTER - In this Jan. 28, 2013 photo, Chinese-born U.S. scientist Hu Zhicheng stands at the waterfront promenade along the Huangpu River in Shanghai, China. By 2004 Hu was an internationally recognized expert in the field of emission-limiting catalytic converters for automobiles, and he decided to take that expertise back to China. In a place notorious for its horrific smog, he figured to get in on the ground floor helping create cleaner-running automobiles. (AP Photo/Eugene Hoshiko)