This interactive article created by NASA Climate Kids answers the question: What causes air pollution? Children will learn that air pollution is caused by solid and liquid particles and certain gases that are suspended in the air. These particles and gases can come from car and truck exhaust, factories, dust, pollen, mold spores, volcanoes and wildfires. The solid and liquid particles suspended in our air are called aerosols (Source).
Organization: NASA Climate Kids
Climate Kids is produced by the Earth Science Communications Team at NASA’s Jet Propulsion Laboratory within the California Institute of Technology.