How harmful are electronic cigarettes? What's in vapes? Toxins, heavy metals, maybe radioactive polonium Unmasking the Toxicity: The Environmental Harm of Smoking and Vaping Manitoba Nicotine & Tobacco Reduction Alliance Illicit Vapes and E Cigarettes Flood Stores as F.D.A. Struggles to Combat Imports The New York Times Colorful Packaging, Hidden Dangers: The Push to Regulate Vape Aesthetics