Tiresias, the blind Ancient Greek prophet, could foresee the future for Apollo, and was transformed by Hera and lived as a woman for seven years ...

Men assess potential rivals that have a larger penis as more of a threat, both physically and sexually, according to a study by Upama Aich at the University of Western Australia and colleagues, ...

Women most often ranked male bodies more attractive when they exhibited a higher shoulder-to-hip ratio (i.e. a V-shape) and a ...

Ducks evolved reverse spirals and sperm storage that give females surprising control, challenging long-held assumptions about ...

The study reinforces the idea that sexual selection has been key in forming unique human traits—and that old adages might be ...

Why do humans have larger penises than other primates? New research tests attraction, rivalry, and sexual selection for ...

Among marine mammals, beluga whales ( Delphinapterus leucas) are particularly difficult to study in their icy habitat. To better understand and protect this endangered species, scientists must piece ...

In the icy waters of Alaska's Bristol Bay, a new study reveals how a small population of beluga whales (Delphinapterus leucas ...

Beluga whales avoid inbreeding by switching partners over time, helping a small, isolated population stay genetically healthy ...

This experimental study used life-sized and screen-based 3D male avatars to test how penis size, height, and body shape ...