Many of the gender differences that we discussed in previous sessions of my crash course were established through evolution at the dawn of human civilization, in a physical environment that was very ...

A lot of myths, stereotyping resentment and political correctness cover the basic trivial truth that men and women are (statistically) different in traits and behaviors. I am going to start a crash ...

In this episode of Crash Course Biology, we’ll discover sex and sexuality as a continuum across life. We’ll learn why humans are the only species with gender, and why same-sex mating is more common ...