Smoke without fire: What's the truth on e cigarettes? New Scientist E Cigarettes Vaping with Juul & Other Electronic Cigarettes E Cigarettes, Vapes, and other Electronic Nicotine Delivery Systems (ENDS) FDA E cigarettes: Why is vaping so dangerous? Mile End Dental Clinic Vaping may raise cancer and heart disease risk, study suggests Medical research The Guardian E cigarette Characteristics, Safety Issues, & Regulation Britannica