The president’s executive order signaled an intention to narrowly define the sexes, but experts say he is oversimplifying the ...

But just like Mendel and his peas don’t fully explain the actual complexity of genetic inheritance, simple definitions for ...

The Department of Health and Human Services, under the leadership of Robert F. | The Department of Health and Human Services, ...

The size of human beings has increased over the past century thanks to better health and nutrition — but this change has not occurred equally among men and women, a new study shows.

Clearly, this order is not fully informed by current biological science,” said Dr. Richard Bribiescas, president of the Human Biology Association.

I said that I’d awakened transformed into a monstrous cockroach. Of course, I meant this as metaphor. Still, my experience in ...

When President Donald Trump signed an executive order preventing trans girls and women from competing in women’s sports, I ...

However, even today, “women tend to prefer taller men,” he ... the head of the Department of Human Biology at the University of Wrocław in Poland, who was not involved in the study, told ...

Anyone who has critiqued, or even dared to question, the ideology of the transgender movement likely has been accused of being a “biological ...

The Trump HHS defined "sex" as "a person's immutable biological classification as either male or female" based on reproductive sex cells.