The term “smog” is a contraction of the words “smoke” and “fog.” Smog usually consists of soot particles, sulfur dioxide, and other compounds. The citizens of Los Angeles initially blamed the ...

At its peak, the smog covered the view of the mountain range ... We were seeing a lot of fog, especially close to the Great Salt Lake," Manhan said. This week, Manhan said there was a thick ...

Tens of millions of Pakistanis spent at least four months breathing toxic air pollution 20 times above safe levels, in the worst winter smog season for several years, according to data analysed by ...