Reproductive System

A small village in India is home to more than 200 sets of twins.

Statistical study finds having children has long-term environmental impact.

Cockroaches who eat an unhealthy diet become fat and mature late.

Fossil evidence suggests a tiny, ancient crustacean used sperm for mating.

Single women look longer at photos of male faces; no difference between single and attached men.

More and more individuals seem to be relying on assisted reproductive technologies.

A new study on reproductive success finds that humans don’t always conform to the roles of "promiscuous" males and "selective" females.

Spring and early summer is the nation's season of risk for conceiving a child with birth defects, a new study finds.

Leadership and overachievement might be a good predictor of which kids will go on to become parents.

Animals obviously hook up, at least during mating season. But do they like it? According to experts, there are two answers: yes, and it is impossible to know.

There are common misperceptions about "test-tube" and "designer" babies.

Rattlesnake mothers will eat their dead offspring to regain energy lost in reproduction.

Kissing unleashes chemicals related to sexual stimulation.

Calves of older killer whales have better survival rates; older age in human moms can also be beneficial.

It's great those octuplets are here and healthy, but really, humans aren't designed to have litters.

Fertility experts see the birth of octuplets as a serious medical complication, not a triumph of reproductive technology.

Maxed-out credit cards are one way guys lure in the ladies.

Scientists find early stage of sex chromosome evolution in strawberry plants.

Virulent infectious fungi shown to reproduce sexually, possibly in human cells.