Today,the use of energy from sources other than coal-for example,other fossil fuels,nuclear power,and hydroelectricity-has greatly reduced the occurrence of industrial smog.

Industrial Smog

Air pollution resulting from industrial activities, characterized by the presence of smoke and harmful gases, particularly sulfur dioxide and particulate matter.

Hydroelectricity

The generation of electricity using the flow of water through turbines in dams.

Coal

Coal is a combustible black or brownish-black sedimentary rock used primarily as an energy source or in industrial processes.