The op-art loving side of the internet has developed a new obsession – the reverspective optical illusion. Taking Reddit by ...

While optical illusions often have a mind-bending effect on me, I've never given much thought to how they affect our furry friends – but of course, someone on the internet has. Testing their feline ...

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 ...