What do a Ching dynasty emperor and Promenade Road have to do with each other? At first thought, nothing at all. But a strange set of events that started centuries ago have ended with a huge iron bell ...

Bell peppers are on one end of the spectrum, for example, while "ghost peppers" rank high on the other side. To honor Scoville's invention, the Google Doodle team has created a tasty little game ...