Leaves of three, let them be, right? But what happens when you get covered in poison ivy and can't stop scratching? Jennifer Novotney, winner of the 2014 Chemistry Champions science communications competition, breaks down what it is about that dreaded vine that makes us so itchy. Reactions also offers up a remedy for the poison ivy's itch using the power of chemistry. Check out the video, which is sponsored by the American Chemical Society, here: http://youtu.be/SJEU3PT0O5g.
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