Pollution caused by the use of fossil fuels can be reduced by 

The use of fossil fuels can have an impact on the environment, air quality, climatic conditions, and human health.

Every recent scientific study concludes that the burning of fossil fuels for energy, such as coal, oil, and gas, is the primary contributor to the rapidly rising level of carbon dioxide that is driving climate change. As the use of fossil fuels increases, the climatic conditions change and the temperature rises. The extraction, processing, and combustion of fossil fuels can have a negative impact on community health. 

Pollution caused by the combustion of fossil fuels can be reduced to some extent by increasing the efficiency of the combustion process and employing various techniques to reduce the escape of harmful gases and ashes into the environment.