Socializing is found across the animal kingdom, but osculation — or kissing — seems to a human behavior. How did it start and why? The Science of Kissing author Sheril Kirshenbaum discusses the history and biology behind kissing.
Related NPR Stories:
- What Darwin Learned From Kissing
- The (Mostly) Blissful History of 'Kissing'
- Bee-Hive Glue Makes for Safer Kissing
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