A new study of wild bats reveals that an animal's immune system is shaped by more than its need to fight infections. Researchers from the University of Maryland have found that sex, age and ...

Males of the species Drosophila melanogaster pack thousands of almost two-millimeter-long sperm cells into significantly smaller storage organs. A new study reveals how they move in an orderly manner ...

We've all heard of menopause: a supposedly terminal moment for the female reproductive system, in which the ovaries stop ...

Postmenopausal ovaries may remain active by interacting with immune cells. The findings of a new study could widen ...

Starting one's sex life and having children at a young age can run in the family. But can pregnancy have beneficial health ...

Why do so many men only think about fertility when there is a problem? Perhaps the answer lies in our societal scripts.

Clinical data reveals male factors contribute to half of all infertility cases, shifting the focus toward earlier ...

Aging affects every organ in the body, yet we still know little about how the ovary changes over time. In a new study published in Nature Aging, Yale researchers created one of the most detailed maps ...

Follow this section to personalize your feed and get instant alerts. WHY FOLLOW? Update your preferences in Account Settings Personalized Content Follow this tag to personalize your feed and get ...

Insects are capable of reproducing in fascinating ways. Throughout the world, these diverse critters feature a wide range of anatomy, each specialized to their environment. The hissing cockroach is ...

For centuries, eels have kept one of nature's most stubborn secrets. Scientists have chased answers through ancient folklore, dead ends in early experiments, and decades of missing evidence. Even with ...