Here is a simple-looking visual trick challenges your perception of two lines. What you see may surprise you, revealing how ...

Chameleons' wandering eyes have fascinated and puzzled scientists since the days of ancient Greece. Now, after millennia of ...

This spiral illusion seems like a chaotic intersection, but the circles never cross! What you perceive first reveals whether you’re an instinctive big-picture thinker or a sharp, detail-oriented ...

Now that daylight saving time it's time to prepare for the earlier darkness that comes with this shift. Even if you've been driving since you were a teen, it's still important to brush up on those ...