Nonhuman primates like bonobos and chimpanzees might engage in same-sex sexual activities to strengthen bonds, particularly ...

A study in mice on small RNAs in sperm helps explain how the health of fathers can influence the health of their offspring.

A newly published manuscript authored by Dr. Gunda Georg, YourChoice Therapeutics and Columbia University Medical Center ...

Childbirth depends not just on hormones, but on the uterus’s ability to sense physical force. Scientists found that pressure ...

In the spring of 2023, we returned to Península Valdés, a rugged coastal region in Argentine Patagonia, expecting to witness the familiar sights and ...

Leonard Greene (“Kennedy Center forever,” column, Jan. 4) said wicked could just as easily describe President Trump, who ...

Kathy Briggs slipped her arms through the thick straps of a brand-new baby carrier, tugging it over her beige shirt as two ...

Dr. Gil Mor discusses sex-specific placental responses and long-term immune alterations from prenatal virus exposure.

The results show that males focus their mating efforts on the most fertile females by combining information about the timing of swelling and reproductive history. Because male bonobos can effectively ...

The male reproductive system is made up of the parts inside and outside the body that help a male make a baby. Both the male and female reproductive system are needed for this. The male reproductive ...

Reproduction is the process by which organisms make more organisms like themselves. But even though the reproductive system is essential to keeping a species alive, unlike other body systems, it's not ...