The U.S. fertility rate fell to a historic low in 2025. Discover the economic pressures and demographic shifts driving this ...

Statistics show clear differences in the population's immune system according to sex: men are more susceptible to infections ...

Scientists discovered that making a very small change to female mice's DNA caused them to develop male reproductive organs.

A female with new cubs of the year emerges from the den between March and May with cubs weighing around 5 to 7 pounds.

In Michigan's Upper Peninsula, an urgent care center is seeing patients who want a medication abortion. It's a model other states can use when operating a reproductive rights clinic becomes too hard.

Researchers constructed a labyrinth at Adelaide University. It's not big; rather, it's made to fit under a microscope, with ...

As a quartet of astronauts make their way to the far side of the Moon, far-fetched notions of human colonies on the satellite or even Mars - a three-year return trip - are again getting an airing.

Scientists found that the male’s hectocotylus, the specialized arm for mating, is lined with receptors that can sense ...

New study finds microgravity disrupts sperm and embryo development, raising concerns about human reproduction in space.

Floating in near-weightless conditions can be disorienting for even the most experienced astronauts. Male reproductive ...

Their discoveries show how both resilient and fragile life can be in the absence of gravity. In low gravity, sperm lose their ...

A Brazilian rainbow boa snake, which is being cared for at Portsmouth College in England, has given birth to 12 babies ...