Air Pollution Control Measures​

Mexico City’s “Hoy No Circula” (No Driving Day) policy limits car use based on license plates, reducing smog by 20%. London’s Ultra Low Emission Zone (ULEZ) charges high-emission vehicles, cutting air pollution by 38% in central areas. These measures protect public health—air pollution causes 4.2 million deaths yearly—and show that cities can take bold action to clean their air.​

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