Howard Hawks famously said that all a good movie needs is three great scenes and no bad ones. Well, according to James Cutting, a psychologist at Cornell University in Ithaca, New York, they also need to conform to a special mathematical formula. In a forthcoming paper, Cutting reveals that most modern Hollywood blockbusters conform to a mathematical model for attention span called the 1/f fluctuation.
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.