Many aspects of our world, from the body mass of creatures in the animal kingdom to the population of cities across the globe, follow an intriguing mathematical pattern. Known as Zipf's law, the rule ...

Optical illusions test the limits of human vision by deceiving our eyes and brain. A black-and-white spiral pattern hides a ...

A cave themed psychedelic puzzle hides more than meets the eye, and only those with sharp observation can succeed. Do you ...