Tightening the standards could speed up transportation projects designed to reduce traffic congestion. Traffic causes 60-65% of the region's ozone pollution.
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Many pedestrian-friendly places have poor air quality due to motor vehicle exhaust, which poses a health risk to those who choose to walk.
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Commentary
Alexis Madrigal
Mobile devices could lead to more city living.
William S. Lind
The libertarian/Republican policy of opposing public transportation, especially rail, is wrong.
Joe Romm
Responses to global warming can be measured on a continuum between real adaptation and rhetorical adaptation.
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