There have been decades of regulations to make vehicles greener and improve air quality in London and Beijing, as well as a popular shift toward less polluting road transport. Now, total emissions of harmful air pollutants from vehicle exhausts are lower than those from cooking in the centers of these two megacities, a study has found.

There have been decades of regulations to make vehicles greener and improve air quality in London and Beijing, as well as a popular shift toward less polluting road transport. Now, total emissions of harmful air pollutants from vehicle exhausts are lower than those from cooking in the centers of these two megacities, a study has found.

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