Anyone who's ever stared in desperation at a paint colour chart will know that telling shades apart is not always the easiest task. Due to our biological differences, some people seem to have no ...

Optical illusions have a way of tricking our brains in ways that you can't even imagine. These mind-bending images may look different at first glance, while a whole new perspective opens up once you ...

Try your hand at lots more optical illusions below to test yourself A FASCINATING viral experiment has sparked debate online with people left stumped over if they see blue or green. The clever online ...