New studies are shedding light on one of the biggest mysteries of human reproduction: Why do chromosomal abnormalities become common in eggs?

Victoria Gray spent 34 years battling the debilitating pain of sickle cell disease. Then she volunteered to be the world's first "prototype" for a CRISPR therapy, based on technology invented at UC ...

Common pollutants are disrupting energy production at the cellular level in wild seabirds, potentially affecting fitness, new ...

A rare whale species appears to be in the midst of a promising birthing season, though scientists are skeptical it's enough ...

A large-scale analysis of 117 mammal species found that preventing reproduction is associated with longer lifespans, suggesting a strong link between reproductive activity and life expectancy. Why do ...

Something about a warm, flickering campfire draws in modern humans. Where did that uniquely human impulse come from? How did our ancestors learn to make fire? How long have they been making it?

A field in eastern England has revealed evidence of the earliest known instance of humans creating and controlling fire, a significant find that archaeologists say illuminates a dramatic turning point ...

How monogamous are humans, really? It’s an age-old question subject to significant debate. Now a University of Cambridge professor has an answer: somewhere between the Eurasian beaver and a meerkat.

Humans are far closer to meerkats and beavers for levels of exclusive mating than we are to most of our primate cousins, according to a new University of Cambridge study that includes a table ranking ...

The person was an older adult with underlying health conditions, officials said. The first human to have ever been infected with the H5N5 strain of bird flu has died, Washington state health officials ...

In a startling first, a Washington state man has been infected with a strain of bird flu previously only detected in animals. The “severely ill” man was hospitalized with a high fever, confusion and ...