Building Subway Systems and Improving Air Quality in China: New Evidence from Multiple Chinese Cities

Partly to reduce air quality problems, China has invested heavily in urban subway systems. This paper provides the first comprehensive estimates of the effects of these investments on urban air quality, finding substantial air quality improvements.

Working Paper (19-14) by Lunyu Xie, Joshua Linn, and Haosheng Yan — 1 minute read — June 7, 2019



Lunyu Xie

Joshua Linn

Senior Fellow

Haosheng Yan