In praise of vaping: better than smoking / Jean-Frano̧is Etter -- The case for regulation / Eric A. Feldman -- The origins of nicotine regulation / Shital A. Patel -- The history of smoking / Jason Hughes and Cambio Rivista -- Better definitions of electronic cigarettes / Public Health and Tobacco Policy Center -- More praise of vaping, surfing through regulation / Matt Novak -- Electronic cigarettes urge consensus / Jamie Hartmann-Boyce -- Regulation: possibly bad / Jeff Stier and Henry I. Miller -- Electronic cigarettes can do no wrong / Public Health England -- The social factors of vaping / Jason Hughes and Cambio Rivista -- Electronic cigarettes: good for smokers, bad for teens / Janet Raloff -- The FDA takes the hard line / Iran Daily -- A scientific perspective on the categorization of e-cigarettes / Raphaela Putzhammer, Christian Doppler, Thomas Jakschitz, Katharina Heinz, Juliane Fürste, Katarina Danzl, Barbara Messner, and David Bernhard.