My research crosses the boundaries between volcanology, geophysics and tectonics. In the past decade, satellite technology has revolutionised our ability to measure Earth’s surface topography and deformation globally and with unprecedented resolution. My specialism is in using these tools to understand volcanoes, faults and ground stability and increasingly to influence hazard management. These advances have changed the ways in which volcanoes are monitored and deformation signals interpreted globally. My work in the East African Rift has increased awareness of volcanic and seismic hazards in the region.