New Research on E Cigarette Use Reveals Positive Public Health Trends New study comes the closest yet to proving that e cigarettes aren't as dangerous as smoking E cigarettes and Vaping: The New Tobacco Battleground Community Commons E cigarettes: 'cancer risk close to zero' Bhekisisa FDA warns retailers against illegal sale of e cigarettes to children PBS News Study suggests uncertainty in e cigarettes' usefulness for quitting smoking Harvard Gazette