Highways shut, flights grounded as smog blankets China's Tianjin
By Norihiko Shirouzu and Natalie Thomas | BEIJING BEIJING Authorities in Tianjin grounded dozens of flights and closed most highways on Sunday after severe smog blanketed the city, one of more than more than 40 in China’s northeast to issue pollution warnings in the past 48 hours. Air quality index (AQI) readings at some monitoring stations in Tianjin, a port and industrial city southeast of Beijing, peaked […]