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Today, we're getting salty as we continue our series "Taste Buddies" — Short Wave's ode to taste buds. In this encore episode, Scientist in Residence Regina G. Barber goes on a salty flavor journey with scientist Julie Yu. Along the way, Julie explains salt's essential role in our daily lives and how it affects our perception of food. Follow Regina on Twitter @ScienceRegina. Reach the show by sending an email to ShortWave@NPR.org.

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