sperm

Scientists have found that female zebrafish can filter the semen of their mates to only allow the best sperm to fertilize their eggs.

Researchers turned male body cells into egg cells with two X chromosomes, which were then fertilized with another male mouse's sperm.

A Reddit post sharing an article in The Greek Reporter titled "Sperm Counts Drop by 62% Worldwide" has gone viral.

The stalk-eyed fly compensates for its lack of male-bearing sperm.

Taxifolin, an antioxidant used to treat some cancers, increased the sperm quality of boars by improving their gut microbiome and blood chemical content.

The anonymous 27-year-old man has suffered from coughing, a runny nose, sneezing and a hive-like rash every time he has orgasmed for the last 10 years.

The family is suing a Houston doctor and hospital, according to a personal injury lawyer.

A 16-year study has concluded U.S. sperm quality is decreasing, and environmental factors are one unconfirmed possibility.

The study involved 1,506 couples struggling to conceive.

Infertility is one of the most common problems for young people, affecting between 10 to 15 percent of couples.

The European Court of Human Rights said Dominique Petithory Lanzmann does not have legal standing to bring her late son's sperm to a fertility clinic in Israel so it can be implanted in eggs to make her grandchildren.

The research could change our understanding of the female anatomy.

"I felt dirty, almost as if I'd been raped," one victim said of the actions of Ottawa doctor Bernard Norman Barwin.

Females use sperm to activate eggs, but then produce clones of themselves.

Monica and Yongmin Zhu from California raced against the clock to retrieve some of their son Peter's genetic material after he died.

Researchers studied men who had visited fertility clinics.

Peter and Cheryl Rousseau filed a lawsuit in Vermont's federal court accusing Dr. John Boyd Coates, III and the fertility clinic for duping them.

The gel is rubbed onto a man's back or shoulders and, in theory, should drop sperm count to prevent pregnancy.

The U.K. imports thousands of sperm samples from Europe each year, and a no-deal Brexit could see supplies could decrease quantities.

Researchers built on existing evidence suggesting heat can affect a man's sperm count.

The Italian system does not offer artificial insemination to lesbian parents and registering a child may require the mother to lie that she had sex with a man.

Sperm was among the hundreds of things SpaceX sent to the International Space Station.

Sean Hannity has floated his latest conspiracy theory about the former president.

An important breakthrough meets a critical requirement for creating lab-grown sperm.

Why are Americans having less kids?

Air pollution is so widespread it might be related to infertility for a "significant number of couples," according to the researchers.

Stress can be hereditary, but new research suggests it doesn't have to be.

The process can lead to the creation of whole new species.

Laboratory testing has confirmed the presence of lead, a toxic heavy metal, in two supplements sold by Infowars.

Low sperm count is also associated with health problems, including high risk of cancer and heart disease.