I am Professor of Geophysics at Universidade de São Paulo (USP), Brazil. I use tiny disturbances in the Earth’s gravity and magnetic fields to investigate the inner structure of the Earth and it’s evolution through time. These disturbances can be measured on the ground using specialized equipment, onboard dedicated satellites, and even in very small sections of rocks using magnetic microscopes. I also develop new mathematical and computational methods for extracting as much information from these data as we can.