AB Hernandez, who is a biological male, was met with fresh protests after claiming gold in the high jump and triple jump at the California Interscholastic Federation state finals at the end of May.

Researchers show maternal iron levels can override genetic sex determination in mice.

Across many cultures, both men and women rate female faces as more attractive, and women exhibit this preference even more ...

All amateur boxers must now pass the World Boxing Associations' new mandatory sex testing — a win for women everywhere ...

Gov. Jim Pillen’s signature Wednesday was the final hurdle to legally requiring that all student-athletes competing in public ...

Burmese pythons are wreaking havoc on the Everglades ecosystem, but some native animals have been known to prey on the ...

Someone whose gender identity does not align with the sex they were assigned at birth and who may or may not go through gender transition. This is the opposite of cisgender, which describes people ...

IMANE KHELIF has issued a response after a leaked medical report claimed the gold medal-winning Olympian is a “biological ...

The study is the first to show that low iron levels can affect fetal sexual development. Male mouse fetuses can develop ...