Chemically Freezing Sperm Tails Could Be the Key to a Reversible Male Contraceptive

As sperm swim they transform chemical energy into motion, the way a car’s engine uses gas to propel you down the road. Like that engine, the process is complicated—if just one part stops working, the whole system can grind to a halt. This idea might lead to a contraceptive for men that’s reversible. »10/01/15 7:40pmThursday 7:40pm

Meet the Protein That Plugs a Sperm Into an Egg During Fertilization

The successful union of egg and sperm in fertilization depends on a sperm cell’s ability to get through an egg’s thick protective coating and latch itself to its membrane. A study published in the journal Andrology yesterday gives us our first look at the protein responsible for the tie-down. »8/27/15 5:50pm8/27/15 5:50pm

The First Person Who Ever Saw Sperm Cells Collected Them From His Wife

It’s a bright day in 1677, in the city of Delft, and Antonie van Leeuwenhoek is making love to his wife. But moments after he shudders with orgasm, he hurries out of bed to grab his microscope. After all, he’s not just spending time with his wife: he’s running an important scientific experiment at the request of the… »6/01/15 3:13pm6/01/15 3:13pm

In A Snake Orgy, Ejaculate Can Get Expensive

Every spring, male red-sided garter snakes enter the mother of all meat-markets. While mature males can breed every year, females are only fertile once every three years, which puts them in very short supply. The result? Snake orgy, obviously. But for male snakes, this sexual free-for-all comes at a surprisingly high… »5/11/15 10:23am5/11/15 10:23am

Scientists create a cyborg sperm for the first time ever

Scientists at the Institute for Integrative Nanosciences in Dresden, Germany, have created "the first sperm-based biobots"—a cybernetic microorganism made of metal and a bull's sperm cell that can be remote controlled and used to impregnate an egg or deliver a drug to a target anywhere inside your body. »12/11/13 10:53pm12/11/13 10:53pm

Sperm Carry Over 37 Megabytes of DNA Data, and Other Amazing Science Facts

Did you know that the DNA information in a single sperm contains 37.5 MB worth of data? Which means that an average ejaculation almost instantly transfers roughly 1.5 1,500 terabytes of data. Suddenly USB 3.0 doesn't look that impressive when compared to what Mother Nature's been using for years. »1/03/13 2:40pm1/03/13 2:40pm