Regulatory hurdles, industry objections, and legal fights have gone on for decades over traditional tobacco. What’s in store for the next generation of smoking? By Clare Watson / Knowable Magazine ...

Using e-cigarettes and other tobacco products to keep from relapsing to cigarettes doesn't appear to be effective, according to a new longitudinal study of nearly 13,000 smokers in the United States.

E-cigarettes work by heating a nicotine solution, or e-liquid, which contains, in addition to flavoring, a substrate called propylene glycol. The U.S. Food and Drug Administration generally regards ...