BEIJING--Authorities issued their highest warnings for fog and haze on Tuesday as smog enveloped major cities in northern China, warning the public that visibility could drop to less than 50 ...

Excessive rates of pollutants, including gases, finely divided solids, and finely dispersed liquid aerosols, are released into the atmosphere, outpacing the environment's natural ability to break down ...

BEIJING’S acting Mayor Cai Qi unveiled a new environmental police squad at the weekend to root out illegal burning in the city. The announcement marked the latest official response to widespread ...