Ever wondered how old the earth is, or how many galaxies there are in the universe? These questions and many more are answered in this fascinating series. A perfect aid for school projects or homework tasks. Popular subjects that children will want to learn about. Covers a wide range of subject matter, which all comes together to create a library of information that children can refer to at any time. Striking full-colour illustrations to grab and keep the child's attention. Titles are presented in a question and answer style making the information easily understandable. Published simultaneously in hardback for gift and institutional use, and in great value paperback that children can buy for themselves.