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 Caf¨¦ 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 dates for this episode:
April 6, 2013 (originally aired)
March 28, 2014 (rebroadcast)