
New survey data show an estimated 5 million teens use e-cigarettes and nearly 1 million use them daily. Here's more on their favorite brands and flavors.
(Image credit: Sean McMinn/NPR)

New survey data show an estimated 5 million teens use e-cigarettes and nearly 1 million use them daily. Here's more on their favorite brands and flavors.
(Image credit: Sean McMinn/NPR)