While electronic cigarettes have become wildly popular, many questions remain unanswered about the legal status and health benefits of these newly fashionable devices.
See also: The Rise Of E-Smoke
Governments are grappling with defining rules for e-cigarettes, while the U.S. Food and Drug Administration's Center for Drug Evaluation and Research only currently regulates e-cigarettes that are marketed for therapeutic purposes.
To find out answers to some of these questions, watch Mashable's primer on e-cigarettes in the minute-long video, above.
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