Pitch Leiden stones own life? ... Or how young people actively discover that stones have a greater impact on their daily lives than they suspect. Concept Planet Earth is a virtual expedition that through a proper selection information via a digital learning project, a problem-based character, inter- and multidisciplinary, and a competition element combines an attractive shape and an extensive contact with professional marine scientists. In 'Planet Earth' is a competitive element to immerse young people in science and turn to creatively tackle real-life problems.