Talk:Smog

The word smog is obtained from the combination of the words smoke and fog. It is one of the best known example of air pollution that occurs in many cities throughout the world. The word smog was initially used to describe the smoke-fog conditions. However, nowadays, the name depends upon the composition or the mode of its formation. there are two types of smogs as described below:

  (a) classical smog: it is also known as sulphurous smog or London smog. this type of smog was first noticed in London in 1952 and it resulted in the loss of many human lives.
  (b) photo-chemical smog: this type of smog is distinctly different from the classical smog. it is also called Los Angeles smog as it was first noticed in Los Angeles in 1950.