But what if human remains could be as nonthreatening as a nice bag of garden soil or a peaceful woodland hike? It might not ...

New research shows that the surrounding cells and tissues of the ovary play a crucial role in how eggs mature and how quickly ...

The ticking of the biological clock is especially loud in the ovaries—the organs that store and release a woman's eggs. From age 25 to 40, a woman's chance of conceiving each month decreases ...

A man in a red knit cap yanked as hard as he could. “That’s just—my ankle—breaking!” Cam yelped. No one suggested slicing the ...

Scientists said Tuesday they have turned human skin cells into eggs and fertilized them with sperm in the lab for the first ...

Scientists have used human skin cells to produce functional eggs using a new scientific technique they say could one day help ...

Learn the key differences in appearance behavior and danger between these two snakes often confused in the wild.

Researchers have discovered how protein networks protect chromosomes during egg and sperm formation. This reveals why errors ...

When a woman becomes pregnant, the outcome of that pregnancy depends on many things — including a crucial event that happened while she was still growing inside her own mother’s womb.

When couples have trouble conceiving a baby or lose a pregnancy, they often undergo routine tests, which can turn up a shock: One of the prospective parents may be missing a chromosome. The most ...

Human fertility hinges on a delicate molecular ballet that begins even before birth. UC Davis researchers have uncovered how special protein networks safeguard chromosomes as eggs and sperm form, ...