Countdown to Life: The Extraordinary Making of You, a new BBC series focused on how our prenatal development shapes our lives, has brought new attention to a group of seemingly sex-swapping people in the Dominican Republic.
People following biologists on Twitter got a bit of a surprise this morning: their feed is full of genitals. They can blame Anne Hilborn (@AnneWHilborn) and a few of her colleagues at the Department of Fish and Wildlife Conservation at Virginia Tech.
Depending on what era you live in, a penis might be known as a plough, a pillow prick, a jigglestick, or a jasper, while a vagina might be a fly-trap, an oracle, a catch 'em alive-o, or the antipodes. Brush up on your historical slang with a pair of genital charts.
Why is a penis called a penis? Most names of our genitals arise from other languages. And once you know the origins of the names for these body parts, you'll discover how sanitized modern language is when it comes to naming sex organs.
Earlier this afternoon, Saturday Morning Breakfast Cereal's Zach Weiner floated an interesting thought: "One day," he mused, "there will actually be a pill that grows your penis six inches."
Duck sex is far more interesting than it has any right to be, due to the twisted nature of the birds' genitals. Male and female ducks have corkscrew-shaped sex organs which spiral in different directions. Now we know why.