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 ...

While new optical illusions go viral all the time, here are some of the most famous illusions that have kept us scratching our heads for years.

Prepare to be amazed by mind-bending optical illusions that challenge your perception! These captivating images can trick ...

Kids love being tricked. I know this because over 1,000 UK schoolchildren just voted a book about optical illusions as the winner of this year's Royal Society Young People's Book Prize for science.

A grayscale ballerina who appears to be moving. A human who can fit in a doll box. A black-and-white prism that appears to change shape when... Optical illusions are a brain feature, not a bug. Here's ...

When a human looks at a distant skyscraper, it appears small to the eye. It’s a visual illusion, and we use other contextual information to know the building is actually tall. Our new study shows, for ...