What turns you on?
Sure, there are the obvious answers: beauty, brains, braun. But human sexuality is a complicated business. Studying it is more complicated still.
That was, until the internet came along. Computational neuroscientist Ogi Ogas is half of the team behind "A Billion Wicked Thoughts," the book that used web search history data to blow the lid off sexual desire.
If you want to learn more, take a look at this 2012 talk with Ogi Ogas and Sai Gaddam: