Scientists Say Kissing Began Long Before Humans Existed

Happy Young Interracial Couple Kissing

Key Takeaways

  • Kissing may date back 21.5 million years in early ape ancestors

  • Researchers studied modern primates to estimate how the behavior evolved

  • Kissing is not universal today and only 46% of cultures practice it, say researchers

Originally published on healthday.com, part of the BLOX Digital Content Exchange.