The internet is still not done fighting over math problems and optimal sleeping temperatures, but today brings yet another tweet that’s specifically designed to stoke fierce debate. In the video below ...

Ever since it was published in 1892, the rabbit-duck illusion has been perplexing viewers with its remarkable ability to shapeshift. Does it show a rabbit and then a duck, a duck and then a rabbit, ...

Study of man often featured in works by the Flemish master reveals hidden painting of woman beneath model’s beard ...

A drawing from 1899 is sparking debate on social media and could shed light on how your brain works. In the following drawing, do you see a duck or a rabbit? Can you see both animals? According to The ...

Illusions aren’t just fun to look at — they reveal how your brain really works. One famous image, which looks like both a duck and a rabbit, shows how your mind makes choices without you even noticing ...

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 ...