Happy International Kiss Day!
This holiday was born in the United Kingdom and is now known around the world.
While the origin of the kiss itself is controversial. Some theories suggest that there is an evolutionary purpose to the exchange of saliva, as important genetic information is revealed about the partner by the saliva.
In this photo taken in 1966, American scientist James Stuckey and volunteer Judy Creeden demonstrate the human body and its ability to function as a conductor of electricity during a lecture in New York sponsored by the Atomic Energy Commission.
