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How optical illusions work has been long-debated among scientists and philosophers, who wonder whether these illusions stem from neural processing in the eye or involve higher-level cognitive ...

So, almost the Sixth Swamp Deer has hidden somewhere in this forest optical illusion. Your Challenge is to spot the Sixth ...

On some evenings the rising Moon seems to swell into a glowing disk that dwarfs city skylines and mountain ridges, as if it ...

The optical illusion appears to show two grey squares with different shades, but they are actually exactly the same colour.

Breakthroughs, discoveries, and DIY tips sent six days a week. Terms of Service and Privacy Policy. In Head Trip, PopSci explores the relationship between our brains ...

Every illusion has a backstage crew. New research shows the brain’s own “puppet strings”—special neurons that quietly tug our perception—help us see edges and shapes that don’t actually exist. When ...

We sent a writer to the mind-bending museum’s Santa Monica opening for a sneak peek of holograms, gravity-defying rooms, 3D ...

Optical illusions are older than you think. The first optical illusions date back to 20,000 BC and took the form of cave sculptings. Nowadays they are found all over the place – on screens, in books ...