Non-binary gender/sex

I want to examine in a little more detail the realities of sex and gender diversity, viewed through a biological and historical lens. It's easy to poke fun at the Tumblr alternative subcultures, and some of it is cringe-worthy, but the reactionaries who deny that there is anything other than male and female, man and woman are also incorrect. The simple truth is that sex and gender are always going to be a complex topic if you care about being thorough and accurate. More videos are in production. Sources: 1. The World Health Organization's page on "Gender and Genetics": http://www.who.int/genomics/gender/en/index1.html 2. Disorders of Sex Development with Testicular Differentiation in SRY-Negative 46,XX Individuals: Clinical and Genetic Aspects. http://www.ncbi.nlm.nih.gov/pubmed/27055195 3. Human sex-determination and disorders of sex-development (DSD). http://www.ncbi.nlm.nih.gov/pubmed/26526145