The microbiology versus the psychology of kissing

This year, we celebrated our 25th wedding anniversary. So, last week, one evening, I told my wife about a news story I heard on National Public Radio (NPR) about the microbiology of a kiss. My wife smiled.
A group of researchers, I said, looked at the oral bacterial flora of 21 couples to determine how many bacteria were transferred by a kiss. …
The microbiology versus the psychology of kissing























