As of Feb. 20, the Bureau of Prisons had 2,198 transgender inmates in prisons and halfway houses, including 1,488 people identified as male at birth who now identify as female, and 710 people ...

A women's soccer club based out of Barcelona has sparked outrage after two players, with visible facial hair, took the field – they are both transitioning from female to male.

Gould points out that field observations of amplexus — when a male frog mounts a female to fertilize her eggs — are also relatively rare, even though scientists know it is necessary for breeding.

For instance, while male chimpanzees are always dominant over females, female bonobos outranked 70 percent of the males in their communities. And all of this varied across sites and over time.

I’ve recently heard some sharp comments from friends about male authors publishing books under female names. The pseudonyms are sometimes gender-neutral, but in genres dominated by women ...