A systematic review published in the *Journal of Environmental Health Science & Engineering* takes a comprehensive look at how governments around the world are tackling one of the most persistent challenges of modern urban life: air pollution. Drawing on 114 studies selected from more than 2,200 initial records, the researchers found that the most effective strategies do not rely on a single solution but instead weave together broad policy frameworks, sector-specific interventions, and pollutant-targeted measures. The review paints a detailed