Pharyngula: Sex in the MRI

This morning I got a question in e-mail, asking if I'd heard of a particular paper. Of course I had, it's a very fun bit of research...and then I realized I'd never mentioned it on the weblog before. I guess it's because it's focused entirely on the phylum Chordata, specifically one rather peculiar species—Homo sapiens. I probably just assumed nobody would be interested, because there aren't any a