A mysterious grid of dots spanning several miles of Western China's sand dunes like a giant chessboard may be the result of geological surveys for nickel mines, according to new analysis of satellite ...

An optical illusion is a visual phenomenon where our perception of an image differs from objective reality. This image is perceived as a geometric optical illusion. These optical illusions occur due ...

DOTS in a grid, oblong bumps and multiple stripes… these are just some of the unusual markings that adorn Britain’s roads. But have you ever wondered what they are for? YouTube star Tom Scott ...