Emission control refers to the various technologies and strategies used to reduce or eliminate the release of pollutants into the environment. This includes reducing emissions from vehicles, industrial sources, and other sources of pollution. It is essential for protecting air quality and human health, as well as mitigating the impacts of climate change. Emission control technologies can include catalytic converters, particulate filters, scrubbers, and other methods for cleaning and reducing pollutants before they are released into the atmosphere. Research in this area focuses on developing new technologies, improving existing methods, and implementing policies to reduce emissions and improve air quality.