That, ladies and gentlemen, is a duck penis. Science blogger Ed Yong has a great article up today about these freaky, corkscrew behemoths and the equally freaky, labyrinthine duck vaginas. A researcher from Yale has been studying both, and thinks these rather baroque naughty bits evolved in competition with one another, as female ducks tried to evade rape (or, rather, impregnation by a rapist) and male ducks tried to get around those barriers.
The shape of the female duck's vagina is a physical barrier that prevents the male from launching forth his ballistic penis to its fullest extent. It won't stop a drake from ejaculating (and those in Brennan's trials always did), but it does limit how far the semen is deposited along the vaginal tract. Not all males are hit equally hard by these defences. Those that the female actually wants to mate with have an easier time. If she's into a male, she strikes a pose that signals her receptiveness, keeping her body level and lifting her tail feathers high. She repeatedly contracts the walls of her genital tract, relaxing them for long enough for favoured suitors to achieve full penetration.
Males who try to force themselves upon her receive no such help and have to cope with vigorous struggling. The female may not be able to resist such advances, but her convoluted vagina gives her ultimate control over where the sperm of her current partner ends up. The fact that only 3% of duck offspring are born of forced matings suggests that females are indeed winning this battle of the sexes.
I have long thought of ‘Coke and Mentos’ as a less fun ‘liquid plumber and aluminum foil’ science fair trick, no longer… okay what the fuck did I just watch pic.twitter.com/Ny2Etsm9Hm — 𝖘𝖍𝖗𝖎𝖒𝖕 𝖇𝖎𝖓𝖈𝖍 (@shrimpbinch) November 13, 2019
In Episode 5 of this podcast on the future of humanity, co-host Eva Kelley travels to meet transhumanist pioneer and neurologist Dr. Phil Kennedy, who recently had a brain-computer interface installed in his own head. Dr. Kennedy tells Eva all about that experience (including gory footage from the operation), compares his approach to brain-computer interfaces […]
The European Medicines Agency approved a vaccine for the deadly Ebola Virus Disease. The vaccine has already been administered to hundreds of thousands of people in the Democratic Republic of the Congo, saving countless lives during an ongoing epidemic there. From Nature: The decision by the European Medicines Agency (EMA) to allow US pharmaceutical company […]
Sous vide cooking: It sounds fancy, but it’s actually one of the easiest and most reliable ways to cook. It’s the reason why many restaurants are able to put out delicious dishes with a consistent flavor. All you need is the right equipment, and that hasn’t always been available to those outside the resto crowd. […]
The more you use your computer, the more it becomes possible for others to use it too. Where there are anti-virus systems, there are hackers looking for a way to get around them. That’s why it’s important to get software that doesn’t just passively scout for viruses in the background. The folks behind GlassWire have […]
Knowledge is power. It’s a cliché, but sometimes things turn into a cliché because they’re true. If you’re making your way through the world of business and entrepreneurship, it only makes sense to read about the insights of people who have climbed that ladder before you. Trouble is, the modern workday doesn’t leave a lot […]