Tens of millions of Americans take nutritional supplements. New studies allege some pills do not contain what is on the label. Other research indicates consumers may be ingesting too many vitamins. New concerns about dietary supplements.
Guest Host: Steve Roberts
Purists may grumble that e-mail is killing the art of writing, but as linguistics professor Naomi Baron points out, every technological advance throughout history has changed written communication. In her new book, she shows how innovations including the fountain pen, the telephone, the typewriter, and, yes, e-mail, have altered the way we write to each other.
- Naomi Baron professor of Linguistics at American University and the author of six previous books.
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