Electronic cigarettes (e cigarettes) are sometimes called e cigs, vapes, vape pens, and electronic nicotine delivery systems (ENDS). E cigarettes come in many shapes and sizes. Most e cigarettes contain nicotine. Get the facts about e cigarettes, E cigarette Characteristics, Safety Issues, & Regulation Britannica What is an e cigarette? BBC Science Focus Magazine Local health council sounds the alarm about vaping E cigarette Vaping Q&A Allegro Pediatrics