Originally published on Tue October 15, 2013 12:14 pm
At a basic level, kissing is a biohazard. What is love then, if not the willingness to expose yourself to a host of nasty diseases lurking in your partner's mouth?
But could kissing also be a tool with a purpose?
Psychology graduate student Rafael Wlodarski, from the University of Oxford, wanted to find out. Results from his experiments supported two of the existing hypotheses about why we kiss. First, we kiss to assess potential mates. Second, we kiss the mate we've found to maintain attachment.
We all feel the biological master clock, ticking deep within our brains, that tells us when to sleep and when to wake.
Well, it turns out that our skin cells have a circadian rhythm of their own. Researchers have found that depending on the time of day, our skin's stem cells busy themselves with different types of tasks.
I'm Michel Martin and this is TELL ME MORE from NPR News. We've talked before on this program about why Latinos in the U.S. are more likely to tweet and use other social media than other Americans. Today, we're going to hear from a Latino tech leader who wants to boost the Latino presence in the science and business of technology. We'll talk about that in just a few minutes.