Industrial smog is a type of air pollution that primarily results from the burning of fossil fuels, such as coal and oil, in factories and power plants. It consists of a mixture of smoke, sulfur dioxide, and other pollutants, which can create a thick, gray haze in the atmosphere. This smog is most common in urban areas with heavy industrial activity and can lead to serious health problems for residents. The formation of industrial smog is often exacerbated by weather conditions, such as temperature inversions, which trap pollutants close to the ground. Cities like London and Los Angeles have historically experienced severe industrial smog episodes, prompting regulations to improve air quality. Efforts to reduce emissions from factories and vehicles have been implemented to combat this environmental issue.