Our understanding of female–male power relationships in animals has changed over time. Evolutionary biologists once thought ...

Editor’s Note: The views expressed in this commentary are solely those of the writers. CNN is showcasing the work of The Conversation, a collaboration between journalists and academics to provide news ...

In a quiet lab at Cornell University, scientists have made a discovery that could reshape how we think about life’s earliest ...

The coronavirus disease 2019 (COVID-19) outbreak caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) was declared to be a global pandemic by the World Health Organization (WHO) on ...

Hummingbirds, known for their dazzling colours and agility, exhibit distinct differences between males and females. Males ...

Lions, scientifically known as Panthera leo, are the second largest member of the big cat species. This species includes ...

A Vermont elementary school says it will no longer use the words “male” or “female” when teaching fifth-grade students about puberty and human reproductive systems. Families of students at Founders ...

A female casque-head iguana at the U.K.’s Exotic Zoo has given birth to eight babies without any male contact, a rare ...

EDITOR’S NOTE: Starre Vartan is the author of “The Stronger Sex: What Science Tells Us About the Power of the Female Body,” which will be published on July 15. People who lived through the Irish ...

Intersex is an umbrella term for people who are born with one or more traits in their chromosomes, genitals, hormones, or internal reproductive organs that don’t fit the typical male or female ...

MONTGOMERY, Ala. (AP) — Alabama lawmakers are advancing legislation that would strictly define who is considered female and male based on their reproductive systems. Opponents said the move could ...

A Vermont elementary school is reportedly removing "male" and "female" language from its fifth grade science lessons covering the human body, puberty and reproduction. In a letter sent home to parents ...