Chinese Authorities Hold U.S. Seismologist Facing Espionage Charge, Family and Advocates Say
A Chinese-born U.S. citizen and seismologist, Youlin Chen, has been held in China since November while accused of espionage, his wife and advocacy groups say. Chen, who became a U.S. citizen in 2011 and is based in Boston, authored U.S.-funded research on distinguishing North Korean nuclear test blasts from earthquakes. U.S. officials have designat…