Third-hand smoke harms health

Jiang Xingguang

(en.nhfpc.gov.cn)

Updated: 2017-02-10

An American scientist conducts a experiment on third-hand smoke in the Lawrence Berkeley National Laboratory in the San Francisco on Feb 6. Third-hand smoke also includes the new pollutant produced by cigarette residues and the air pollutants after the chemical reaction. [Photo by Ma Dan/Xinhua]