At this stage, known as gastrulation, a flat and featureless sheet of cells folds into a living blueprint for the body, a ...

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 ...

Human brains go through five distinct phases of life, each defined by its own set of characteristics, according to a new ...