Men can't nurse babies, so why on Earth do they have nipples?
The reproductive system is a collection of organs found in both sexes that work together for the purpose of producing offspring. Check here for the latest news related to the reproductive system, including fertility treatments and potential new technologies for having children.
The testicles are the primary male reproductive organs. They produce gametes, or sperm, and they secrete hormones, primarily testosterone.
Forget what you know about the birds and the bees: Sometimes you just have to take matters into your own hands.
The entire female menstrual cycle has been replicated in a bento-box-like device that can fit into the palm of your hand.
Cloning is the process of taking genetic information from one living thing and creating identical copies of it.
The age at which women enter menopause may be influenced by earlier events in their reproductive life.
Egg freezing has been touted as a way for women to put off having children. But few women who freeze their eggs actually end up using them, a new study finds.
A zebra shark at an Australian aquarium had pups even after living in isolation from males for years.
In the not-too-distant future, scientists may be able to create human sperm and egg cells in a lab dish. But what are the ethical implications of this?
Women undergoing a particular chemotherapy had a much greater number of eggs in their ovaries than expected, a finding that surprised researchers.
Skin cells from mouse moms were matured in a lab dish and developed into baby mice. The feat is a step toward a similar process that one day may work in humans.
In two widow spider species, males deploy an ingenious strategy to avoid being cannibalized during sex.
Biologist and writer Carin Bondar leads the way into the intriguing world of animal sexual practices in her new book, "Wild Sex."
A city in Japan says it will pay for egg freezing as a way to improve the country's low birth rate. But the procedure is not a perfect solution.