Male orgasm is pretty easy to figure out. Without it, there is no insemination, so evolutionarily if you can’t get off you can’t make babies. Pretty straight forward.
The female orgasm however is more of a mystery. It is unclear why it occurs (and to some, unclear HOW it occurs).
So the recent research on the evolutionary origin of the female orgasm in The Journal of Experimental Zoology… earth shattering.
Read about the results over at the New York Times!