Looking for a way to kill time? Google’s got your back: Today’s Google Doodle features an interactive Rubik’s Cube to celebrate the puzzle’s 40th birthday.
Back in 1974, a Hungarian architecture professor named Erno Rubik wanted to create an object that wouldn’t fall apart even if all its parts were moved independently. The Rubik’s Cube was born from that idea, and it took Rubik weeks to solve the puzzle once he created it. A year later, Rubik patented the cube and now, the Rubik’s Cube is the world’s top-selling puzzle game.
Rubik himself is now 69 and focuses his current work on promoting science in education.