When you first get a new angelfish, you may find yourself wondering whether or not it’s a male or female. After all, you might have your heart set on a specific sex for breeding purposes. However, ...

"For any case of inbreeding of a Neanderthal female with a Homo sapiens or Denisova male," Mazières said, "there is a high risk of hemolytic disease of the newborn." The condition can lead to ...

Human populations that left Africa evolved quickly whereas Neanderthals stayed the same, according to an analysis of blood group systems.

Trump's executive order declares sex as "an individual's immutable biological classification as either male or female" and states that "gender identity" cannot be included in the definition of ...

Portrait of Two Grown Male and Two Female Neanderthals and their Way of Living. Close-up Tribe of Four Hunter-Gatherers Wearing Animal Skin Holding Stone Tipped Tools, Pose at Entrance of their Cave.

The origins of human language remain mysterious. Are we the only animals truly capable of complex speech? Are Homo sapiens ...

"For any case of inbreeding of a Neanderthal female with a Homo sapiens or Denisova male, there is a high risk of hemolytic disease [abnormal breakdown of red blood cell] of the newborn ...

The Alabama legislation, which passed the Senate on Thursday, would create legal definitions of male and female based on the reproductive organs at birth. At least nine other states have enacted ...

A specific gene variant seen in people is likely one of many that contributed to the development of language in modern humans ...

A new study links a particular gene to the ancient origins of spoken language, proposing that a protein variant found only in ...