The Big Earth Science Observatory: a real laboratory for simulating the natural phenomena that take place on our planet, in complete safety. The box includes a large plastic scene on which to perform many scientific experiments: from a reproduction of two volcanic eruptions, to simulations of a waterspout, an earthquake, and even a landslide. An illustrated guide explains in a fun and simple way how the great natural phenomena work and proposes many other experiments to conduct at home with every-day materials.