The intersex flag ( learn more ). Of course, the idea that groups need such flags is contentious. We tend to think of human beings as dividi...

Besides producing sex cells, another function of the gonads is to secrete hormones. Hormones are chemical molecules found in all multi-cellu...

In this article we’ll continue to examine biological sex, and look more closely at how sexual reproduction works in human beings.  Male a...

The English word  sex can be traced to the late 14th century and comes, via French, from the Latin sexus which means (only) the state of bei...

This article may seem like a digression from our investigation of sex and gender, but it isn’t possible to sustain an authoritative discussi...

In popular usage, the terms ‘sex’ and ‘gender’ are often used interchangeably, as if they meant the same thing. Sociologists, philosophers ...