It's easy to think of pupils as simple holes that widen in the dark and shrink in the light. But if you look across the animal kingdom, you'll see a variety of pupil shapes: vertical slits in cats and ...

Animals come in an extraordinary range of body shapes. A starfish looks nothing like an earthworm, a mouse, or a human. Yet even closely related species can appear radically different: corals, ...

Inspired by the theories of D’Arcy Thompson, scientists combined theoretical and experimental approaches to establish ‘mechanotypes’ as the physical links between genes and body shapes. Pictured are ...