Featuring a blurry image of abstract yellows, oranges, purples and blues, this optical illusion appears pretty plain. It's ...

Unusual shadow illusions created by light and object placement. Fears are brewing over an oil-price shock that could rattle ...

Optical illusions occur naturally in different habitats and conditions across the world. Cloud formations can sometimes make it seem like there's an ocean or a UFO in the sky. Whether it is salt flats ...