Before the late 1970s, almost all pistachios found in the U.S. were dyed bright red. Learn why -- and why a famous diplomatic standoff changed that -- in this episode of BrainStuff.
 Learn more about your ad-choices at https://www.iheartpodcastnetwork.com

Before the late 1970s, almost all pistachios found in the U.S. were dyed bright red. Learn why -- and why a famous diplomatic standoff changed that -- in this episode of BrainStuff. Learn more about your ad-choices at https://www.iheartpodcastnetwork.com

Why Do Pistachios' Color Depend on the Iran Hostage Crisis?

Whether the topic is popcorn or particle physics, you can count on BrainStuff to explore -- and explain -- the everyday science in the world around us.

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Why Do Pistachios' Color Depend on the Iran Hostage Crisis?

Why Do Pistachios' Color Depend on the Iran Hostage Crisis?