From Polaroids to The Pill, Businessweek celebrates its 85th anniversary with a look back at the 85 most disruptive ideas in our history. (Ironically, they left out listicles.)

+ Paul Ford digs deep on one of those disruptive ideas: Kitty Litter. It’s the product that brought cats indoors. And indoor cats made for cat videos. And cat videos made the Internet.

+ “Some of our greatest cultural and technological achievements took place between 1945 and 1971.” Aeon’s Michael Hanlon wonders why our technological advances have stalled.