Some animals reproduce only once before dying. This life strategy, called semelparity, sees organisms channel all energy into ...

Playing dead isn't the ultimate ghosting technique. Frogs use "tonic immobility" as a strategy to stay alive during mating ...

In the Himalayan forests, the satyr tragopan performs one of the bird world’s most dramatic courtship displays.

The Legislature by veto override of first-term Democratic Gov. Josh Stein established the law that took effect Thursday.

Tracking a single male python through protected wetlands led biologists to one of the largest breeding females captured this year.

Introduction Adolescents in Kenya face a high burden of sexual and reproductive health (SRH) challenges, including early pregnancy, sexually transmitted infections and limited access to accurate ...

Two genetic innovations could address major welfare and productivity issues within the broiler and layer industries.

Understanding the evolution of insect mating behavior is essential for explaining how early insects adapted to life on land.

Only two sexes, boys or girls, will be recognized in all administrative rules, regulations and public policies for North ...

Nature is astonishingly diverse. Across the planet’s oceans, forests, grasslands, and cities, living beings interact in ways that defy rigid expectations.

Males engage in a two-week-long sex marathon with as many females as they can find. Each frenzied encounter can last up to 14 ...

Doctors in Brazil discover and confirm that a woman has blood with male chromosomes, a rare case of human chimerism.