Is Vaping Better Than Smoking? American Heart Association Different Types of Vapes How Many Are There? Pure E Liquids Vaping on the rise in U.S., especially among young people Pew Research Center Prisons selling vapes? Smart public health policy and a step toward autonomy behind bars Nicotine Addiction From Vaping Is a Bigger Problem Than Teens Realize News Yale Medicine Nicotine absorption from electronic cigarette use: comparison between first and new generation devices Scientific Reports