This optical illusion puzzle is a true test of your brain’s ability to process visual details quickly. Today’s challenge ...

A contest to design a sound-only magic trick could help psychologists learn about differences between visual and auditory perception.

A baffling optical illusion has left social media users scratching their heads and squinting their eyes trying to spot the ...

An optical illusion is going viral on social media. The image shows the alphanumeric U5A in all rows and columns. The ...