Questions and answers present information on science topics, including human physiology, animal behavior, earth science, and natural science.


Discusses the structures built by many different kinds of animals for protection, food gathering, storage, and nesting.

Questions and answers on a wide range of subjects, including geophysical sciences, physiology, natural history, physics, and technology.

Text and pictures take the reader inside animal homes--used for resting, sheltering from weather, escaping enemies, and raising young.


Introduces the world of visual illusion describing the workings of the eye-brain system and how different types of illusions occur.