A team led by researchers from the Technical University of Catalonia and Dexeus University Hospital in Spain collected 15 ...

With their whip-like tails, human sperm propel themselves through viscous fluids, seemingly in defiance of Newton's third law ...

The little clump of cells looked almost like a human embryo. Created from stem cells, without eggs, sperm, or a womb, the ...

Surprisingly, this occurs right within our bodies. Human sperm cells have unique characteristics, with a peculiar blob-like head and an extraordinarily long tail. Despite their appearance ...

Scientists have grown an entity that closely resembles an early human embryo, without using sperm, eggs or a womb. The Weizmann Institute team say their "embryo model", made using stem cells ...