Links to E Cigarette Resources American Lung Association Vaping E Cigarette Health Risks: What's the Latest? Dana Farber Cancer Institute Marijuana and Your Lungs: Is Vaping Safe for People with COPD? Vaping vs. Smoking: Is One Really Safer Than the Other? How To Smoke A Vape Like A Pro Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN