Emission controls are technologies and regulations designed to reduce the release of harmful pollutants into the atmosphere. These controls are essential for improving air quality and protecting public health. They can include equipment like catalytic converters in vehicles, which help convert toxic gases into less harmful emissions, and industrial scrubbers that clean exhaust gases from factories. Governments often implement emission control standards to limit the amount of pollutants that can be released by vehicles and industries. Organizations like the Environmental Protection Agency (EPA) in the United States set these regulations to ensure compliance and promote cleaner air for communities.