Christopher Nolan explains his obsession with Shepard Tones—layered sound waves that simulate a constant ascent in tone—to create a sensation of building tension
The philosophy of Kurzgesagt, YouTube’s most existential science channel
Every bowling lane has a hidden oil pattern that can affect the speed and direction of your ball
The knife skills in this video are incredible
Debunking an urban legend
Listen to the sounds of the nightmare machine
Can you solve the missing square puzzle?