Learn how long-term mate switching helps a small beluga whale population maintain genetic diversity.

The cellular biology of reproduction is often depicted as an epic journey, in which millions of intrepid sperm fight to be the first to claim the ultimate prize: the chance to fertilize the egg, which ...

Believe it or not, but ducks have a reputation for the unexpected: bizarre and intricate mating anatomy. According to ...

It’s not just about chromosomes. Or reproductive cells. Or any other binary metric. Many genetic, environmental and developmental variations can produce what are thought of as masculine and feminine ...

Air pollution is increasingly being examined for its possible link to fertility challenges in men and women, with growing ...

Men assess potential rivals that have a larger penis as more of a threat, both physically and sexually, according to a study by Upama Aich at the University of Western Australia and colleagues, ...

DENVER--(BUSINESS WIRE)--Posterity Health, the leader in male reproductive and hormonal health, has secured $13 million in Series A funding to expand access to comprehensive care for men nationwide.