Since 2010 19 major cities have “remarkably” reduced their pollution so much that it some people are shocked by it. The tracked pollutants have dropped by 20% or more in the cities, which include Paris, San Francisco, and Beijing. The commonality between the cities achieving a remarkable reduction in pollution is thanks to reducing cars, reducing cars that burn fossil fuels, adding green space, and ensuring that people can choose sustainable transportation options. It’s so simple that any city anywhere can follow these solution to clean their own air.

The analysis found interventions such as cycle lanes, uptake of electric cars and restrictions on polluting vehicles had helped to drive the improvements.
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“Air pollution is often presented as a problem that is too difficult to solve and one that is politically unpopular,” said Dr Gary Fuller, an air pollution scientist at Imperial College London, who was not involved in the report. “This report shows that bold policies can improve the air that we breathe.”

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