A guy moves transparent paper and what happens next could trick your eyes. Some cool kids with brussups made this video of illusions featuring transparent sheets moving over each other to create ...

New York — At the Museum of Illusions in New York City, around every corner is a wonder for the eyes. There's a vase that's a face, art that moves with you, and a room that seems to go on forever.

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 ...

Check out some of these optical illusions, below — and see how you perceive images placed before your eyes. Just how do optical illusions work? "From an evolutionary standpoint, optical illusion is ...

Katie has a PhD in maths, specializing in the intersection of dynamical systems and number theory. She reports on topics from maths and history to society and animals. Katie has a PhD in maths, ...

The state's National Guard received an order to send equipment and personnel to D.C. late on Friday. Reuters, the news and media division of Thomson Reuters, is the world’s largest multimedia news ...