A study analyzed decades of births and found that larger families showed a distinct tendency toward all girls or all boys, ...

Have children of same sex and you are now planning for another child of opposite sex? What are the likely chances, probably not that high, according to a study that investigated the maternal and ...

A massive study of over 58,000 women shows that families may have their own subtle biological bias toward having boys or ...

Attitudes are changing around the rights and wrongs of girls playing with and against boys in age-group football ...