has increased. health officials say they expect that number to climb. now, recent figures show the number of teens using e-cigarettes doubled in the last two years. and a single company juul has become the face of this growing crisis. with us is a time magazine health writer. you wrote the story how juul hooked kids and ignited a public health crisis. first, this is not the only brand out there. it wasn t even the first brand of e-cigarette. why is juul responsible as you write hooking kids and starting this hello crisis. sure. as you say, juul is not the only e-cigarette for sale, but it seems something about juul s