Bilingual children's magazine, NATIONAL GEOGRAPHIC World, is geared to school children between eight and 14 years of age. The magazine features extraordinary photography, exciting reportages, interactive elements, and provides English language tuition for German children. With more than 15 children's editions worldwide, it is the biggest children's magazine concept in the world. Marvi Hämmer the rat and his English-speaking world reporters present the texts and audio file adventure stories about animals, nature, history, technology and remote countries. Wild Cards for playing and collecting, the audio book, and English magazine texts promote children's linguistic development. True to the motto of the NATIONAL GEOGRAPHIC SOCIETY, "inspiring people to care about the planet", the focus is on animal welfare and environmental protection.