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 ...

Optical illusions occur naturally in different habitats and conditions across the world. Cloud formations can sometimes make it seem like there's an ocean or a UFO in the sky. Whether it is salt flats ...

Improve visual focus with this timed illusion challenge. Can you detect the hidden 8 among the 3s in 15 seconds?

The Best Illusion of the Year contest offers researchers, and participants, an opportunity to explore the gaps and limits of human perception. By Katrina Miller Take a look at this video of a waiting ...

The regular Short Wave science roundup covers mysterious red dots in space, the neurons behind optical illusions and a study of octopus arms. It's time now for our science news roundup from Short Wave ...

Chances are you’ve encountered some version of the “Ebbinghaus illusion,” in which a central circle appears to be smaller when encircled by larger circles and seems larger when surrounded by smaller ...

An optical illusion is a fascinating visual phenomenon where the brain perceives an image differently from reality. These illusions play tricks on our eyes, making objects appear distorted, moving, or ...

Optical illusions are more than internet curiosities as they are widely studied phenomena that reveal how our human brain interprets shapes, light, and movement. These puzzles challenge our brain and ...