New research shows that variation in mating behaviors, parental care and differences in ornamentation of the sexes in bird species is driven by demographics rather than vice versa. An international ...

For far too long, women have been seen as secondary to men under the patriarchal rule of human society. Yet, humanity's existence has been a minor blip in the history of the Earth, where females are ...

This line of reasoning lead the researchers to develop the following hypothesis: as female economic dependence on male investment increases, so too should anti-promiscuity moralization. That is, men ...