Hon Lik invented the e cigarette to quit smoking but now he's a dual user Vaping The Guardian Marijuana and Vaping: Shadowy Past, Dangerous Present The New York Times Disposable vape use falling in UK ahead of government ban Awareness of vaping risks key to reducing e cigarette use among young people The George Institute for Global Health What You Need to Know About Vaping Vaping use among Michigan youth 4 H Healthy Youth