Scientists have detected microplastics — the tiny and pervasive fragments now found in our seas, drinking water, food and, increasingly, living tissue — in human semen and follicular fluid, according ...

Scientists have detected microplastics in human semen and follicular fluid, the liquid that surrounds an egg in an ovarian follicle. "This is not an isolated finding –– it appears to be quite common," ...

As males age their reproductive success typically declines. A study in fruit flies, led by University of Oxford researchers has found that while old males do produce fewer offspring than young males, ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. PORTAGE, Ind. — A man is accused of possibly ...

Sperm are male reproductive (sex) cells. The word "sperm" can refer to spermatozoon (singular) or spermatozoa (plural). Sperm are tiny cells with an oval-shaped body and a long tail. They measure just ...