Why are manhole covers round?
Why is yawning contagious?
Why are tennis balls fuzzy?
Why do the English drive on the left?Here's the unchallenged source of answers to civilization's most baffling questions. Part of the Imponderables series, When Do Fish Sleep? arms listeners with the knowledge about everyday life that encyclopedias, dictionaries, and almanacs just don't have. Think about it: where else are you going to get to the bottom of why Mickey Mouse has only four fingers?
