三万多人了解到安全的空气不需要花几千块钱，从哈尔滨到新疆到海南！
Thomas is an Associate Professor of Behavior Science at the University of Chicago Booth School of Business and the founder of Smart Air, a social enterprise to help people across the world breathe clean air without shelling out thousands of dollars for expensive purifiers.
China
India
Mongolia
Bangladesh
Philippines
Global
