You will be redirected to our submission process. DRAFT Reproductive success depends on precisely coordinated molecular and cellular signaling across sperm function, oocyte maturation, fertilization, ...

Humans don’t have a defined mating season like deer or wolves. Here’s how evolution blended biology, culture and social life into year-round intimacy.

Male fertility issues spark debate, as studies show conflicting results on sperm counts. Experts reveal the complex reality behind declining birth rates.

Most people know only two things about the appendix: You don’t need it – and if it bursts, you need surgery fast. That basic ...

A new international study warns that reproductive health in space is no longer a theoretical concern and that questions about fertility and pregnancy should be pressing concerns. As commercial ...

Thirty babies in a lifetime might sound unbelievable, but in the animal world, that number can be modest. Reproduction follows a clear biological pattern.

One of the most popular explanations for why menopause evolved in some species is called the grandmother hypothesis. Essentially, older females stop having offspring of their own, and redirect energy ...

When closely related species mate, their offspring sometimes survive but cannot reproduce. This pattern often affects males ...

Add Yahoo as a preferred source to see more of our stories on Google. Sex in space: Human reproduction beyond Earth policy must be urgently addressed, experts say As commercial spaceflight edges ...

The human genome is a rich, complex record of migration, encounters, and inheritance written over thousands of millennia.

As commercial spaceflight edges closer to reality, astronauts spend more time orbiting Earth, and as we look to one day settle on Mars, questions about sex and reproductive health in space need to be ...

Reproductive health is impacted by environmental pollution, such as PFAS and microplastics. Discover what the science shows.