Just a year ago, Colgate toothpaste seemed to be on the verge of ending the 25-year reign of Crest as the nation`s best-selling dentrifice. But today, executives at Procter & Gamble Co., Crest`s maker ...

Old wives’ tales, folk knowledge, common sayings, and even cliches and idioms are often taken as givens since they form an often unnoticed part of our vocabulary and culture. There’s so many examples ...