Hard and crusty. Green and gloopy. Clear and watery. Boogers come in a veritable rainbow of colors and a full spectrum of textures from liquid to solid. They’re really quite impressive if you think about it. Which, of course, few of us do, besides adding tissues to our shopping list or cursing the dagger-like boogers that emerge during a trip to a particularly dry locale. But boogers deserve a lot more credit, and this episode is our attempt at righting that wrong. What are boogers, and what purpose do they serve? How long have handkerchiefs been around, and when did mucus evolve? How many of us are nose-pickers, and how do other species deal with their boogers? More stuffed with snot facts than a nose during flu season, this episode has all the best tidbits to share at your next dinner party.

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