Air Quality in the World’s Largest Cities: AQI, Pollution Sources & Solutions
Air quality in the world’s largest cities has become one of the most important environmental and public-health challenges of the 21st century. Rapid urbanization, increasing vehicle ownership, industrial activity, construction, energy consumption, and population growth have contributed to high levels of PM2.5, PM10, nitrogen dioxide (NO₂), ozone (O₃), sulfur dioxide…
