Maybe we watched too many horror movies as kids, or maybe it's just an evolutionary advantage to be wary of danger when it isn't necessarily there, but we can all remember that sudden feeling of ...

A couple of years ago an optical illusion came along and almost broke our site. Over three million people read an article about the most dizzying illusion ever to grace our screens – the rotating ...

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Or do you see something else?

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 ...

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 WINDIEST DESERT — What's your favorite optical illusion? Famous examples include the Ames room, the Ponzo illusion, the Zöllner illusion, the Kanizsa triangle, the Müller-Lyer illusion and the ...

Test your observation skills with this optical illusion IQ challenge that claims only people with a High IQ 141 can find the two hidden cats. Designed to improve focus, visual perception, and logical ...