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, ...

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 ...

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

When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Andriy Onufriyenko via Getty Images Though optical illusions come in all shapes and ...