We are collecting ever more data about our environment, from above using high-end satellite networks, as well as from below with the cheap sensors built into our cellphones. This coverage has the potential to drastically change our perception of the fragile world we live in, and to make sense of such data we commonly use visualization techniques, enabling public discourse and analysis. However, when it comes to understanding complex Earth systems and causality chains�for instance the dramatic events leading up to the 2011 environmental disaster in Japan�can we find more engaging ways of interacting with geospatial data that go beyond static visualization? Stratarium is an interaction space that integrates various interface techniques to allow users to explore a layered model of our Earth in the form of part-physical, part-digital representations, and to understand the relationships between the planet�s surface shape and sensor data resulting from natural phenomena.