sperm
Female fish can pick which sperm they want to father their babies
Scientists have found that female zebrafish can filter the semen of their mates to only allow the best sperm to fertilize their eggs.
Scientists create mice with two fathers and no mother: "revolutionary"
Researchers turned male body cells into egg cells with two X chromosomes, which were then fertilized with another male mouse's sperm.
Fact Check: Did study show sperm count has dropped by 62% worldwide?
A Reddit post sharing an article in The Greek Reporter titled "Sperm Counts Drop by 62% Worldwide" has gone viral.
Flies that grow giant testes produce only female offspring
The stalk-eyed fly compensates for its lack of male-bearing sperm.
Anti-cancer drug gives boars super sperm
Taxifolin, an antioxidant used to treat some cancers, increased the sperm quality of boars by improving their gut microbiome and blood chemical content.
Man allergic to his own semen gets sick every time he orgasms
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.
Texas 4-Year-Old Given 'Unintended' Vasectomy During Surgery
The family is suing a Houston doctor and hospital, according to a personal injury lawyer.
American Men, Your Sperm Is Getting Worse and Scientists Don't Know Why
A 16-year study has concluded U.S. sperm quality is decreasing, and environmental factors are one unconfirmed possibility.
Male Fertility Worsens With Age Just Like Women's: Study
The study involved 1,506 couples struggling to conceive.
A Gene Linked to Unexplained Male Infertility Has Been Discovered
Infertility is one of the most common problems for young people, affecting between 10 to 15 percent of couples.
Court Rules Mother Cannot Use Dead Son's Sperm to Make Grandkids
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.
Clitoris Isn't Just for Female Pleasure. It Also Helps With Reproduction
The research could change our understanding of the female anatomy.
Fertility Doctor Who Used Own Sperm to Inseminate Patients Struck Off
"I felt dirty, almost as if I'd been raped," one victim said of the actions of Ottawa doctor Bernard Norman Barwin.
Worm Species Only Produces Males for Their Sperm
Females use sperm to activate eggs, but then produce clones of themselves.
Parents Allowed to Collect Sperm From Son Killed Skiing
Monica and Yongmin Zhu from California raced against the clock to retrieve some of their son Peter's genetic material after he died.
Smoking Cannabis Linked to Higher Sperm Count
Researchers studied men who had visited fertility clinics.
Fertility Doctor Sued For Impregnating Patient
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.
Male Birth Control Gel to Get Clinical Trial
The gel is rubbed onto a man's back or shoulders and, in theory, should drop sperm count to prevent pregnancy.
British Sperm Banks Might Dry Up After No-Deal Brexit
The U.K. imports thousands of sperm samples from Europe each year, and a no-deal Brexit could see supplies could decrease quantities.
Which Underwear Is Best for Sperm Count? Study
Researchers built on existing evidence suggesting heat can affect a man's sperm count.
Italian Lesbian Cannot Register Baby From Sperm Donor
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, Bone Marrow Are the Newest Cargo on the ISS
Sperm was among the hundreds of things SpaceX sent to the International Space Station.
Hannity: Obama Portrait Artist Used 'Sexual Innuendo'
Sean Hannity has floated his latest conspiracy theory about the former president.
Sperm Made by Scientists Could Replace the Real Thing
An important breakthrough meets a critical requirement for creating lab-grown sperm.
Air Pollution Might Be Causing Sperm to Shrink
Air pollution is so widespread it might be related to infertility for a "significant number of couples," according to the researchers.
Sperm Passes on a Father's Stress by Changing Its Genes
Stress can be hereditary, but new research suggests it doesn't have to be.
Eggs Get A Choice Of Sperm In Sea Urchin Sex
The process can lead to the creation of whole new species.
Is Alex Jones Pushing Lead-Tainted Products?
Laboratory testing has confirmed the presence of lead, a toxic heavy metal, in two supplements sold by Infowars.
Sperm Count in Western Men Has Halved Since the 1970s
Low sperm count is also associated with health problems, including high risk of cancer and heart disease.