“The more you look at ‘common knowledge,’ the more you realize it’s more likely to be common than it is to be knowledge.” —Idries Shah It’s commonly assumed that one of gold’s primary utilities in a ...

Think you know it all? Time to put that to the test. This quiz mixes easier “common knowledge” with trickier curveballs designed to trip you up. From history and science to geography and culture, each ...

Jamie Q. Roberts does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...