A long-term study finds that these rhythms align at certain times of women’s lives, shedding new light on the controversial idea that lunar phases influence human reproduction.

Meet Shoko Sakai, a scientist at Kyoto University's Center for Ecological Research, who explains some of the remarkable reproductive adaptations of plants.

In human male-female pairs with a less similar suite of genes for human leukocyte antigens, sperm fare better when exposed to cervical mucus.

In most vertebrates, the absence of adaptive immunity would be catastrophic, but in some deep-sea angler fish species, it enables their “wild” and “wacky” mating habits.

Fossils from Newfoundland, Canada, reveal the extensive connections that existed among Earth’s earliest, sea-dwelling animals.

Before the joey is born, another pregnancy has already started.

A phthalate commonly found in shampoos, cosmetics, and cleaning products disrupts reproduction in worms.

Building simulations based on real genetic data, researchers conclude Gattaca-like tactics to choose the traits of future offspring would yield little payoff.

A protein present in the ejaculate of male fruit flies activates long-term memory formation in the brains of their female partners.