Sperm

Sperm cells have fooled scientists for centuries: They don't 'swim', they move as their tails 'spin'

Sperm 'drills' into the fluid like a spinning top by rotating around itself whilst its tilted axis rotates around the centre.

Conception not as simple as a sperm race: research reveals how female reproductive system chooses most ideal sperm

The study found that human eggs release certain chemicals to attract the right sperm and that the chosen sperms may be from an entirely different male than the one chosen by the woman to be her partner

Scientists have found that human sperm retains its viability in space if frozen

The fact that frozen sperms can survive in space can make the possibility of a space sperm bank a reality.

Semen frozen for 50 years used to breed 34 healthy lambs in breakthrough study

Amazingly, the sperm resulted in birth rates comparable to semen frozen for 12 months.

Choice of underwear could affect sperm count, a new fertility study finds

Men who frequently wore boxers showed higher fertility rates than those wearing briefs or jockeys.

Scientists develop new 'sperm radar' test to improve fertility diagnosis without killing them

Scientists have developed a new radar-like test that uses magnets to examine human sperm without killing or damaging them, an advance that may help improve the diagnosis of fertility problems.

Random facts just too funny to ignore: Loudest howler monkeys have the smallest testes

The bigger a male howler monkey's vocal organ, the smaller their testes and the less sperm they can produce, says a study.

Why do men exist? Scientific study explains

Since in many species, sperm is males' only contribution to reproduction, biologists have long puzzled about why evolutionary selection, known for its ruthless efficiency, allows them to exist.

Scientists in UK create artificial egg and sperm using stem cells

Using human embryonic stem cells, scientists for the first time have created primordial germ cells, which go on to become egg and sperm, in the lab.

Men with masculine faces may have low sperm quality

Contrary to what one might expect, researchers have found that facial masculinity is negatively associated with semen quality.