Does an often reposted viral video show a timelapse of "16 hours of spinal cord development" in a human embryo? No, that's ...

Human heart cells have been coaxed into regenerating for the first time in a breakthrough that could mend failing organs.

Only about one out of three conceptions leads to birth. 1 Approximately a third of embryos fail to attach to the uterus, while another third is lost after the embryo implants. “Human reproduction is ...