Researchers hypothesize it descended from a slave-making species that lost its own workers because other ants worked for them, with the loss of male production occurring later in evolution ...

In response to social cues, individual clownfish will switch sexes. Cutting-edge research reveals the neural and genetic ...

Some people say that it's hard to understand a woman, but it's probably because they haven't even tried to understand them.

The quality of sperm is highest in the summer and lowest in the winter, according to a new study by scientists at University ...

New treatments for male infertility could widen therapeutic options and possibly shift the treatment burden from women.

Theresa Larkin does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...

We may receive a commission on purchases made from links. "Grey's Anatomy" Season 1, Episode 1, "A Hard Day's Night," features one of the most memorable opening scenes in medical drama history. It ...

When hormonal contraceptive pills hit the market in the 1960s, it revolutionized women’s control over their own bodies. For men, successful reproduction begins with the right cocktail of hormones, ...