One of the world's most marveled subjects revolves around the orgasm of a woman. We can easily understand a man's climax; sex - point - aim - shoot. There's no mystery there. However a woman's arousal peak?
Pull up a chair gentlemen.... This is going to be a while.
According to Cool Hunting:
"... a recent study by The Journal of Experimental Zoology, authors Mihaela Pavlicev and Gunter Wagner look back 150 million years to better understand the development of the female orgasm."
Not completely understanding it, scientists rely on theory to attempt at cracking the mystery behind it.
However, According to The New York Times:
"Still, a number of scientists suspect that the female orgasm serves some biological function favored by natural selection. They just need to figure out what it is."
Dig into this topic further and find out what is understood... and not so much as of yet.
Source: Cool Hunting, The New York Times