Comment »Posted on Saturday 14 February 2009 at 11:49 am by Jacob Aron
In Biology

It’s Valentine’s Day, so here’s the obligatory themed post! Helen Fisher, an anthropologist at Rutgers University in New Jersey, believes she knows why we kiss. The act of kissing is found in over 90% of world cultures, so Fisher suggests it must be the result of evolution.

“Hooking up may have evolved as a fast-acting biological strategy for mate assessment,” she said.

“Men like sloppier kisses with more open mouths and more tongue movement. The hypothesis is they’re trying to get small traces of oestrogen to see where the woman is in her menstrual cycle to indicate the state of her fertility.”

If you’re looking to get lucky with the scientist in your life, you could do worse than send them one of these Scientist Valentines from Ironic Sans. How about this one, where the recent birthday boy professes his love?

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