Vaping substantially less harmful than smoking, largest review of its kind finds King's College London Is Vaping Marijuana Safer Than Smoking? Secondhand e cigarette aerosols expose kids to less nicotine than cigarettes, study finds, but can still be risky CNN The Vape Debate: This New Trend May Be Riskier Than You Think MedStar Health Use of vapes (e cigarettes) among adults in Great Britain ASH Simulator Vape Smoke Joke App on Amazon Appstore