Sex is not one single, simple, uniform biological reality, so biology cannot be invoked as a basis for “immutable” legal ...

The pioneering research of UC Santa Cruz’s Upasna Sharma to determine how a father’s life experiences and environment can ...

A recent Trump executive order defines sex based on gamete size. But the order oversimplifies genetics, hormones and reproductive biology.

Sex is real, and it matters. In sport, this elemental truth cannot be affirmed loudly enough. It is impossible to mount any ...

Florida biologists captured the heaviest panther ever recorded in the state as part of a research program into the endangered animal. The adult male panther weighed 166 pounds, according to the ...

A simple tweak in the nervous system can completely reshape the love life of male butterflies. Researchers found that a ...

After 10 years of monitoring these elusive animals, researchers thought they knew what to expect — but not anymore.

"I'm not aware of any measure you can make of the human brain where the male and female distributions don't overlap," ...

A male panther tipped the scales at a whopping 166 pounds recently after biologist tracked down the big cat. The Florida Fish and Wildlife Conservation Commission, or FWC, says it's the largest ...

Conroe, has filed a bill to amend state penal code to create a new criminal offense of “gender identity fraud.” The bill, HB ...