Older children will be fascinated by these color-illustrated examinations of mysterious events. Books guide young readers through mysteries in an accessible and sensible format. The events might be mysterious, but many could have natural explanations -- while still others might be elaborate hoaxes. Or perhaps unexplained and mysterious forces really are at the bottom of some mysteries "What Science Says" information boxes and "What Do You Think?" question boxes let readers examine the evidence in each case, then draw their own conclusions.Is the human race the only intelligent life form in the universe? Have aliens ever visited our planet? Do scientists believe in UFOs? These and other mysteries are examined.