Traffic Makes Us Dumber: Scientists Say Car Exhaust Causes Brain Damage

By Brian Merchant

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On a local level, discouraging traffic has already been shown to have a tangible impact on some communities: The decongesting of Times Square, for instance, reduced air pollution by 63% in the area. And now, it's increasingly looking like such traffic-curbing policies will be vital not just to improving the livability of communities -- but to protecting both the lungs and the very mental health of those who reside in them. The case for more and better public transportation, more aggressive congestion pricing schemes, and, yes, improved biking and pedestrian environments, has never been stronger.

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