E cigarettes and vaping: what we know so far Heated Tobacco Products, Cigarettes, and E Cigarettes: What's the Difference PMI Science Vaping: A 30 Second High Don't Forget the Bubbles Nothing good comes from smoking , and vaping isn't a safe alternative. E cigarettes often contain nicotine and other harmful substances, and studies show that young people who vape are more likely to Urgent Need To Control Use Of E Cigarettes PWOnlyIAS