Infertility affects one in six couples, with fertility treatments facing daunting 2:1 odds of failure versus success. Emerging research highlights the critical role of vaginal microbiome health in ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. Animals have personalities too—and some animal couples raise their ...

Reproductive science plays a critical role in wildlife conservation, offering innovative tools to counteract pressures such as genetic erosion, habitat ...

The dearth of child-bearing in western countries like the US is seen as a political crisis. Yet, if there is any place in our ...

Juvenile social play predicts adult reproductive success in male bottlenose dolphins, a new study has found. Juvenile social play predicts adult reproductive success in male bottlenose dolphins, a new ...

A study of more than 100 greylag geese found individuals were consistently different in personality traits, ranging from boldness, aggressiveness, sociability to other behavioural traits. Birds of a ...

Researchers uncover how specific genetic and cardiovascular traits give Tibetan women an edge in surviving and thriving at high altitudes, linking better oxygen delivery to more successful pregnancies ...

Male bonobos have an impressive ability to detect when females are most fertile, even though the usual visual cues are unreliable. Researchers tracking wild bonobos in the Congo discovered that males ...

A longstanding question in evolutionary biology is how sexual selection influences how entire genomes develop. Sexual selection is where individuals with certain traits have higher reproductive ...

(Listen to this post, or right-click to download mp3.) "Some guys have all the luck. Some guys have all the pain." -- Song lyrics Last time we saw thaton many traits, males are generally more variable ...