How the zebra got its stripes is not only a just-so story, but an object of scientific inquiry. New research suggests that stripes help zebras evade biting flies and the deadly diseases they carry.
Optical illusions appear when our brains have trouble moulding raw sensory data into shapes and patterns. Designers have been exploiting this process for centuries.
We've never needed Oculus Rift to provide immersive experiences – they've been around for as long as we have.
How our life experiences change the way we perceive colours.
The cheerleader effect describes the phenomenon that you appear more attractive in a group than solo - and it works for men as well as women.
Male Birds of Paradise have patches of super-black plumage that absorb 99.95 percent of light. New research identified their feathers' microscopic structures that make them look so very dark.