Boom. A mind is blown
Can you solve the missing square puzzle?
A simple and soothing video of ‘Fibonacci spiral shavings’ by Paul Sellers
In this excerpt from episode 1 of Carl Sagan’s ‘Cosmos’, he explains how the Greek scholar, Eratosthenes, knew the Earth was curved over 2,200 years ago
“Pendulus” is a double pendulum built by Devin Montes that visualizes the unpredictable patterns of chaotic movement in real-time
People given free or discounted products in exchange for reviews were found to rate products 0.4 stars higher
Kokichi Sugihara’s “Ambiguous Cylinder Illusion” is a finalist for the 2016 Best Illusion of the Year Contest