In preparation for the upcoming Olympics in Brazil, a British long jump champion is planning to freeze his sperm just in case he contracts Zika. It’s meant as a precaution to prevent any future children from developing birth defects, but in reality it’s a complete overreaction based on unfounded fears.
Fruit flies have enormous sperm. This is a well known fact in the scientific community—so well known, in fact, that there’s a name for it: the big sperm paradox. But the massive, spermy problem has long confounded scientists, who couldn’t figure out why such a tiny creature needed such humongous baby batter soldiers.…
Researchers just found an on-off switch for sperm movement. This has the potential to help men who are infertile, but it also has the potential to help all men. It could be an effective form of male birth control.
Scientists from China have made history by taking a cell that’s not a sperm cell and then used it to create a live animal. A similar technique could be used one day to treat infertility in humans.
What you’re seeing in this video is obviously a sperm cell, except it was made in a lab, not a testicle. It’s designed to show how passive elastic swimming can mimic, fairly well, the motions that allow sperm (or fish) to swim.
A mouse’s sperm is much, much larger than an elephant’s sperm. A fruit fly produces the longest sperm known to science. Why do tiny animals make big swimmers, but large animals make small ones?
Get your weekend started right by watching how sperm sometimes form power-swimming blocks to get ahead. And learn why these particular sperm get together.
Doctors have long observed odd, circular cells in semen. They resemble undeveloped sperm, but scientists have been unable to work out how or why they appear—until now.
When men don’t have any sperm in their ejaculate and they’re trying for a baby with their partner, doctors try and extract the swimmers directly from their testicles instead. Success rates of the process are strangely low—but a new way of tracking sperm could help improve things.
You know that characteristic funky seaweed smell? It isn’t a by-product of the plant’s metabolism or environment. It’s a scent manufactured by seaweed for one reason only; to lure the sperm of a mate.
It seems like we’re putting QR codes on pretty much everything these days. And that could soon include your sex cells.
Danish sperm may be the lowest quality sperm in the world. At least, that's one data point you could pull from a study of how alcohol consumption affects sperm counts. The researchers — Danish, of course — call the results "troubling."
A few years ago, researchers made a strange discovery. Sperm seemed to gravitate toward the scent of flowers called lily of the valley. Could this open up a whole new era of scent-based conception and disreputable flower shops?
Human sperm can swim pretty fast, most of the time, but they've got nothing on the sperm of deer mice. What is the deer mouse's secret? Recently, a Harvard professor created a mathematical model of sperm behaviors to figure it out.
A team of Dutch engineers just published the details of a curious new invention: tiny robotic sperm that can be controlled with a weak magnetic field. Like real sperm, these so-called MagnetoSperm flip their tails to swim towards their target. Unlike real sperm, they're made of metal-coated polymer.
You're looking at the world's oldest sperm. At 17 million years old, it's not quite as lively as it once was—but it still took scientists some serious investigation to identify it.
British scientists have finally figured out how sperm is able to connect with an egg. The process is facilitated by a molecule dubbed Juno, a protein that allows sperm to dock to the surface of an egg. The discovery could introduce new fertility treatments and birth control.
The image of a copulating frog dressed in tight-fitting pants sounds quite silly, but it was done in the name of serious research. In fact, more than one biologist dressed up their frogs to solve the mysteries of fertilization.
Everyone knows that as men age so do their sperm, slowing a little and becoming less... potent. But research suggests that sperm actually mutate with age—which in turn could increase the chances of fathering a child with a genetic disorder.