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 ...

To be clear, there really are 12 black dots in the image. But (most) people can’t see all 12 dots at the same time, which is driving people nuts. “They think, ‘It’s an existential crisis ...

With a more uniform grid of dots, the pattern looks like you’re jumping through a portal into another dimension. Both are so cool. Watch as Tadashi Tokieda explains the phenomenon below.