Biologists used cadaver arms to punch and slap padded dumbbells in experiments supporting a hotly debated theory that our hands evolved not only for manual dexterity, but also so males could fistfight over females.
Biologists used cadaver arms to punch and slap padded dumbbells in experiments supporting a hotly debated theory that our hands evolved not only for manual dexterity, but also so males could fistfight over females.