Ready for a challenge? Let’s test how sharp your observation skills are with this fun optical illusion brain teaser! In this puzzle, you need to figure out which of the three individuals – a woman, a ...

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 ...

Martin Doherty received funding from the British Academy/Leverhulme Trust who partially supported this work. He continues to receive funding from the Leverhulme Trust. Radoslaw Wincza does not work ...