Representing two planets, iron, copper and a couple of Olympian gods, the classical symbols for male and female pack a lot of meaning into a few squiggly lines. The symbols themselves are ancient, and ...

If you’ve ever navigated your way through a set of public restrooms, chances are you’ve been confronted with these glyphs: ♀ for female, ♂ for male. Interestingly, these circle-like shapes have ...