Add Yahoo as a preferred source to see more of our stories on Google. Researchers have captured the very first real-time, three-dimensional images and videos of a human embryo implanting into collagen ...

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 ...

As commercial spaceflight draws ever closer and time spent in space continues to extend, the question of reproductive health beyond the bounds of planet Earth is no longer theoretical but now ...

As humanity moves from brief space missions toward longer stays — driven by commercial ambitions for moon bases and eventual Martian settlements — scientists are beginning to confront how the ...

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.

As commercial spaceflight draws ever closer and time spent in space continues to extend, the question of reproductive health beyond the bounds of planet Earth is no longer theoretical but now ...

Scientists have detected microplastics in human semen and follicular fluid, the liquid that surrounds an egg in an ovarian follicle. "This is not an isolated finding –– it appears to be quite common," ...

Scientists have created human eggs containing genes from adult skin cells, a step that someday could help women who are infertile or gay couples have babies with their own genes but would also raise ...

The vast dataset allowed the Johns Hopkins University-led team to demonstrate robust connections between specific variations in a mother's DNA and their risk of miscarriage. The findings shed new ...

Every schoolchild learns that vitamin D is essential for proper bone development. Deficiency leads to rickets, a classical childhood affliction with soft, deformed bones resulting in bowed legs. The ...