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.

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 ...

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 ...

Researchers have captured the very first real-time, three-dimensional images and videos of a human embryo implanting into synthetic uterine tissue—revealing a key stage in reproduction. The resulting ...

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 ...

Megan Molteni reports on discoveries from the frontiers of genomic medicine, neuroscience, and reproductive tech. She joined STAT in 2021 after covering health and science at WIRED. You can reach ...