Pucker up: The history and evolutionary mystery of kissing

If you rang in the new year with a kiss, you took part in a tradition millions of years in the making. Scientists now say the origins of kissing go back much farther than most think. CBS News' Tina Kraus has more.

Pucker up: The history and evolutionary mystery of kissing

TL;DR

  • Kissing is a tradition millions of years old.
  • Scientists suggest the origins of kissing are more ancient than commonly thought.
  • Kissing was part of New Year's celebrations.