A wave of pseudoscientific papers has tried to dismantle one of biology’s most fundamental truths: only two sexes exist, male and female. These papers often claim that sex is a broad “spectrum,” and ...

Human skeletal biologists traditionally provide sex estimations as part of establishing biological profiles (skeletal sex, age-at-death, stature, ancestry/population affinity) for skeletonized remains ...

“Woman competes in women’s sports” should be a dog-bites-man story. Instead, it’s become a game of who’s burying what lede. American runner Nikki Hiltz and Canada’s mononymic soccer player Quinn ...

We humans love putting things in boxes. Assigning simple categories makes us feel comfortable – but all too often, biology comes along to ruin the fun. Sex is often described in simplistic, binary ...

"Genderqueer" and "nonbinary" are contemporary terms for people who don't fit neatly into male or female categories. But acknowledging that not everyone fits neatly into those two groups has a much ...

Richard Dawkins, the celebrated evolutionary biologist, has recently used the claim that biological reality entails that sex is binary, to launch a broadside on the gender choices of trans people. In ...

MEXICO CITY, May 17 (Reuters) - Mexicans applying for a passport can now avoid having to check the box for male or female in a new travel document policy announced on Wednesday and hailed by the ...