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 ...

Have you ever looked at an image and doubted what your eyes were telling you? Well, you are not the only one because such optical illusions commonly take place when your brain wrongly interprets what ...

Optical illusions play tricks on your brain and can make you see things that aren't really there, from static images swirling around the page to images that stay with you even after you look away.

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. In Head Trip, PopSci explores the relationship between our brains ...