China launched the Tianzhou-10 from the Wenchang Spacecraft Launch Site on Monday morning to deliver supplies for its orbiting space station. Apart from the artificial human embryos, the cargo carried ...

Male and female reproductive systems allow human reproduction. Fertilisation occurs when a sperm and egg join to form an embryo. An embryo develops into an unborn baby in the uterus during pregnancy.

Over the past four decades, sperm counts among men worldwide have dropped by more than 50 percent, according to a 2022 meta-analysis published in Human Reproduction Update. The decline is accelerating ...