About everything in the world: from Egyptian pyramids to airplanes

How do muscles work? Can all birds fly? Why is genetics needed? What is polytheism? Where is the Valley of the Temples? The School Encyclopedia series will become an indispensable assistant for schoolchildren in preparing for reports, tests and presentations. In the books in the series, rigorous scientific research is transformed into concise and understandable texts that tell readers about the diversity of the world around them.