This week it’s a look at saliva with America’s funniest science writer, Mary Roach, author of Gulp: Adventures on the Alimentary Trail
. The Sterns are at the Blue Scorcher Bakery Cafe in Astoria, Ore., and we learn which salts are really worth the money with salt merchant Mark Bitterman, author of Salted: A Manifesto on the World's Most Essential Mineral
. [Broadcast Date: April 5, 2013]
Listen to Gulp by Mary Roach.
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