Lexicon Valley

This episode is brought by RXBAR, a whole-food protein bar, made from real, natural ingredients. For 25% off your first order, visit RXBAR.com/lexicon and enter promo code lexicon. Our word for "red" predates our word for "blue"—and that's true for almost every language! Join Slate Plus! Members get bonus segments, exclusive member-only podcasts, and more. Sign up for a free trial today at www.slate.com/podcastsplus. Twitter: @lexiconvalley Facebook: facebook.com/LexiconValley Email: lexiconvalley@slate.com Learn more about your ad choices. Visit megaphone.fm/adchoices