The clip after the break shows a gentleman pouring water into the waterfall where the wheel ... stair puzzle that is exposed as an optical illusion. [David’s] proposed method for debunking ...

The peripheral drift illusion causes us to perceive motion in a still image. A new study shows that the mechanism of this illusion relies on changes in pupil size.

A viral video captures a Korean family in a high-rise during Bangkok's tremors after Myanmar’s earthquakes. Shaking rooftop ...

Social media was flooded with spine-chilling videos of a high-rise building in Bangkok turning into a ‘scary waterfall’ after ...

It’s not real; shifting sand creates a waterfall effect. Located near this UNESCO World Heritage site in Mauritius. Powerful ...