Vaping vaped?

摘要

AMERICA'S FLOURISHING e-cigarette industry is braced. Scott Gottlieb, head of the Food and Drug Administration (fda), a regulatory agency, has made it clear that he holds the sector responsible for an "epidemic" of youthful vaping. Manufacturers, he tweeted not long ago, have no idea how much they sell to teenagers: "We're finding out for them." As The Economist went to press, the fda was expected to announce restrictions on the sale of vaping products in an effort to combat under-age use.