First a fifth-grader found a 27-year-old error at the National Museum of Natural History, and now a high school senior has raised questions about bias in a popular Advanced Placement textbook on United States government, reports Nancy Zuckerbrod for the Associated Press. In both instances, the students appear correct. In fact, legal scholars and top scientists find the teen's criticism of the textbook to be well-founded. The student -- and experts agree -- charges that the book, "American Government," presents a skewed view of topics such as global warming and the separation of church and state.

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