In this episode, Melanie Moses shares her experience of studying volcanoes in Iceland using a swarm of drones to map out the CO2 plume emitted by the volcano. The chapter discusses the use of unmanned drones to measure the gases emitted by volcanoes and the potential for predicting future eruptions. It explores the innovative use of drones in collecting data from volcanoes and showcases the programming and self-organization of co-robots. The process of mapping volcanic plumes and measuring gas concentrations using drones is explained. The episode also explores the utilization of the sketch algorithm and human intelligence to guide the drones in mapping volcanic plumes.