Uncover 100 surprising facts you won't be able to stop thinking about! Challenge your assumptions with mind-bending ...

Infertility is a disease or condition of the reproductive system that affects an estimated 10 to 15 percent of couples trying to conceive in the United States. Male infertility occurs in approximately ...

Changing just one "letter" in the DNA of female mouse embryos triggers the development of male genitalia and testes, scientists have found. "This is a remarkable finding because such a tiny change — ...

A research team at Bar-Ilan University in Israel has reported that by making only slight changes to specific non-coding DNA regions in female mouse embryos, individuals with XX chromosomes, which are ...

A pill to cure baldness is changing the way men age — and how they see themselves. Credit...Photo illustration by Pari Dukovic Supported by By Susan Dominus For most of his 20s, Elliot Connors did not ...

The prostate is a small gland in the male reproductive system, roughly the size of a walnut, that surrounds the upper urethra and produces most of the fluid in semen. As a result, enlargement or ...

Automatic registration into the U.S. military draft pool for eligible men is slated to begin in December, following efforts from lawmakers and the selective service agency to streamline the previous ...

REPRODUCTION is a branch of biology in which the methods of the naturalist and the anatomist have contributed considerably to an understanding of basic physiological processes. The comparative study ...

The nervous system consists of the central nervous system (brain and spinal cord) and the peripheral nervous system (motor nerves, sensory nerves, cranial and spinal nerves, autonomic ganglia, and ...

Railroad wrecks of the week: ¶ In Armstrong, Okla., the Missouri-Kansas-Texas Railroad’s Texas Special ran through a signal in a dense fog and plowed into a freight locomotive. An engineer was killed, ...