For most guys, it's just another fact of life -- but for scientists, the existence of the scrotum is something of a mystery.
Now, thanks to a new genetic study released Wednesday in the journal Genome Research, the duck-billed platypus is shedding some light where, well, the sun doesn't usually shine.
Suffice it to say, the scrotum is a crucial structure. In humans, sperm do best at temperatures a bit below 98.6 degrees. By holding the testes away from the body, the scrotal sac allows...Full Story