Explorers are designed to appeal to all readers aged 6–8: those who are just starting to read alone and more confident readers who are beginning to exercise wider reading and crossreferencing skills. Lively, dramatic artwork scenes draw children into a subject, and each scene is followed by a photographic information spread that gives a wealth of extra detail. As a fun extra element, the reader can follow themed links to access information on related topics.

Big Cats is an adventure to discover the secrets and stories of these amazing mammals, from lions in the savannah to snow leopards in the mountaintops, meeting big cats all over the world.