Pioneering embryologist Shoukhrat Mitalipov reported that his team has encountered hurdles in creating functional human eggs ...

IN “Adolescent Sterility” Dr. Ashley-Montagu assembles an impressive body of facts which show that puberty in the female is not a sudden assumption of the capacity to reproduce, but a slow process of ...

The study was published in the Proceedings of the National Academy of Sciences. The fundamental biological process of reproduction can differ greatly from animal species to species. Both males and ...

Animals have distinct ways of giving birth. Depending on the species, babies can come from the male or female, and the process of laying and hatching eggs varies widely. Here are 10 of the strangest ...