Mathematics a-a-and Sex

Don't know how I missed this very fun TEDTalk from a few months back, but h/t to Cliff Pickover for tweeting it this weekend:



The speaker, mathematician Clio Cresswell, actually has a book out with the same title ("Mathematics and Sex"):
http://www.amazon.com/Mathematics-Sex-Clio-Cresswell/dp/1741141591