哇！此内容没有中文版。点击这里快去看英文版！
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 in China breathe clean air without shelling out thousands of dollars for expensive purifiers.
China
India
Mongolia
Bangladesh
Philippines
Global
Can we make masks biodegradable ?.
I have purchased a mask which has six layers- outer layer is an air mesh, then a spun bonded materia… Read more »
Are surgical masks made out of a different material ? I’m asking because the coronavirus survives up to 7 days on them.