E cigarette flavored pods induce inflammation, epithelial barrier dysfunction, and DNA damage in lung epithelial cells and monocytes Scientific Reports Why is vaping so popular? Devices are sleek and can be highly addictive. Vox Juul 'ignored law' in US e cigarette adverts The FDA agreed to allow the sale of Juul's tobacco and menthol flavored e cigarettes after ordering them to temporarily remove its products from the market three years ago. FOX 5 reports on the How Juul created a market, fueled a crisis, and why regulators failed to stop it : Planet Money : NPR The F.D.A.'s Misguided War on Vaping by Clive Bates