On Thursday, some people noticed something strange and unusual on their phones' home screens. What was that — that odd black-and-blue "f" icon? That couldn't be … could it? Facebook?

A new exhibition on Franz Kafka misses the point.

An curved arrow pointing right. Artist David Černý created "K on sun," a giant, kinetic sculpture of Franz Kafka's head. The sculpture is in Prague, right next to a building in which Kafka ...