E-Cigarettes are everywhere. Vaping has become so ubiquitous that "vape" was Oxford Dictionaries word of the year in 2014. Today, Danielle looks at how and why vaping took off. She examines the early 20th century prototypes for electric vaporizers and smokeless, non-tobacco cigarettes. She also compares the marketing and debates surrounding e-cigarettes to that of their tobacco counterparts.