I really enjoy it when pop culture and biology intersect. Just in time for Valentine's Day, a technical but understandable explanation of the biological roots of kissing.
No one knows for sure, but one guess is that we kiss because that's how some of our ape ancestors fed each other!
Another guess is that it is how women biologically screen their potential mates. The theory is that at a subconscious level, women are looking for mates with different immune responses than their own, making their offspring sturdier, and that this information (MHC complex) is detectable via kiss.
Any and all of these explanations might be scientists reaching too far, but they're all technically plausible.
Saturday, February 13, 2010
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With my new friends on the Great Wall of China
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