Just like in “When Harry Met Sally”, the answer isn’t so simple for Kinda baboons, which form long-term friendships between the sexes.

Hollywood has made men the embodiment of romance in heterosexual relationships. But whether men are more romantic in real ...

Alabama and other Republican-led states push to enact more laws this year to legally define two sexes based on observations ...

OPINION: What happens when the meme illustrating this article does not work? Lance Lawton on why gender and chromosomes may not align as neatly as many suggest. Christian disputes about the now famous ...

What Does It Mean to Be Trans? Transgender is a general term that describes people whose gender identity, or their internal sense of being male, female, or something else, does not match the sex ...

Shortly after President Donald Trump announced his administration's "official policy" regarding biological sex, which aims to erase all gender identities beyond male and female, the actor ...

According to the order, the US only recognizes two sexes, male and ... phenotypically female." The reality, of course, is while sex markers like chromosomes are immutable, people express their ...

This state forms the blueprint for female bodies, and it's not until about six weeks after conception that most people with an XY genotype will follow a male developmental process. Twitter users ...

Similarly, people with Complete Androgen Insensitivity have external female sex characteristics, XY chromosomes, and internal male sex organs. Strict adherence to chromosomes would categorise ...

Donald Trump was re-elected president on a wave of attacks against women and transgender people. Anti-transgender politicians ... “It is the policy of the United States to recognize two sexes, male ...