GEO was and is an unmistakable mixture of the power and magic of the image and the sustainability of thoroughly and seriously researched texts. The digital edition of GEO contains all the content of the printed magazine. The app offers the following functions: • All articles in the printed edition • Table of contents with direct links to the articles • Full-text search function across single/multiple issues • Favorite pages can be marked (set bookmarks) • Convenient text reading mode display o