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 ...

The toxic, black-yellow fog reduced visibility ... specific zones for burning smoke-free fuels, and over time, more regulations were introduced to combat smog. Does this historical event serve ...

“Donora Death Fog — Clean Air and the Tragedy of a Pennsylvania Mill Town.” “Rumor of Blue Sky,” a 2009 documentary about the smog disaster created by Janet Whitney and Andrew ...

Beijing from the air as smog blankets the city. China has ordered hundreds of factories to close and to restrict motorists to cut emissions. In Beijing flights were canceled at the city’s main ...

Dense fog and smog is likely to persist in plain areas of Punjab. Fog and smog is likely in plain areas of Khyber-Pakhtunkhwa and upper Sindh. Temperature of major cities recorded this morning: ...