Why does the peacock have such an elaborate tail? This cumbersome trait significantly decreases the male's chances of survival. It only exists because it confers an advantage to its bearer in the form ...

Sexual selection provides an answer to the existence of lavishly ornate signals in animals, but not to the question of why such signals are attractive—for example, why do females prefer the ...

Why dinosaurs evolved such a huge diversity of crests and frills on their skulls has long been an enigma. But by using modern technology and data analysis, a new study has taken a fresh look at ...