The US cracked down on Juul after an uptick in teen vaping and a flurry of health concerns. Podcaster Leon Neyfakh explains how the ban inadvertently created a dangerous new market for unregulated Chinese e-cigarettes.

This episode was produced by Miles Bryan, edited and fact-checked by Matt Collette, engineered by Andrea Kristinsdottir and Patrick Boyd, and hosted by Noam Hassenfeld.

Transcript at vox.com/today-explained-podcast

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