“But for a harm-reduction argument to be valid, policy makers need strong evidence that vaping improves smokers’ health without creating a new set of risks — to both users and nonusers. So far, the evidence for quitting is mixed, while long-term safety remains unknown.” Big Vape is copying Big Tobacco’s playbook.

+ “The problem has gotten so intense that administrators are sending home e-mails warning parents about the dangers of e-cigarettes in general — and, in particular, about a brand called Juul, which makes sleek devices that are easily concealed and often mistaken for thumb drives.” Juuling: The most widespread phenomenon you’ve never heard of.