Vaping is all the rage in the U.S., but young people are turning up at hospitals barely able to breathe. Over a thousand vapers have gotten sick⁠—37 are dead⁠—and no one knows why. We spoke to cannabis lab director Iniobong Afia about which chemicals in the vapes could be making people sick. To learn more, search for "Science Vs" in the Spotify app.

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