A new scientific review challenges the widespread idea that certain physical features in women serve as biological signals of ...

It’s not just about chromosomes. Or reproductive cells. Or any other binary metric. Many genetic, environmental and developmental variations can produce what are thought of as masculine and feminine ...

New research has mapped the cell types that specialize to form reproductive organs in both sexes, identifying key genes and ...

Mapping the human reproductive system offers new clues into conditions affecting reproductive organs and the environmental ...

Male infertility accounts for nearly half of all conception challenges, yet many couples are pushed into in-vitro fertilisation (IVF) before simple, treatable male factors are evaluated. A fertility e ...

Male bonobos have an impressive ability to detect when females are most fertile, even though the usual visual cues are ...