Sperm may lose their ability to navigate in microgravity, raising new questions about whether human reproduction is possible in space.

A new study by NASA scientists explores the risks and challenges of human reproduction in space, especially for long missions ...

Having a baby in space may be far more complicated than expected, as new research shows sperm struggle to find their way in microgravity.

For a long time, having children has been a young person’s game. Although ancient records are sparse, researchers estimate that, for most of human history, women most typically conceived their first ...

The energy invested in animal reproduction is as much as 10 times greater than previously estimated when the metabolic load of bearing and caring for offspring is accounted for, according to a new ...

In a recent review published in Antioxidants, researchers described the implications of exposure to air pollutants on male fertility parameters and sexual health. They further discussed the potential ...

Epaulette sharks can reproduce without any measurable increase in energy use, stunning researchers who expected egg-laying to be costly. Scientists tracked metabolism, blood, and hormone levels ...

Sharks play a critical role in maintaining the balance of ocean ecosystems. Whether they’re top predators or mesopredators, their presence helps regulate populations of prey species and support the ...