A team of researchers has found microplastics in all 40 semen samples they examined from healthy men, highlighting the urgent need to study how these tiny particles could affect human reproduction.

"We don't know if they have a direct effect on the capacity of a couple to conceive and carry a baby to term." Researchers make disturbing discovery after examining human reproductive fluid: 'This is ...

A report released in September by the US National Academies of Science, Engineering, and Medicine points out that almost no research has been done on human reproduction in space, adding that our ...

Each human woman is born with some 1 to 2 million eggs—comparable to what researchers have estimated in elephants, which remain fertile well into their 60s and 70s.