This session provides the opportunity for contributions that fall within the broad spectrum of Geomagnetism and Electromagnetism, but are not directly appropriate to any of the other proposed sessions. We solicit contributions on theory and simulations, instrumentation, laboratory experiments and field measurements, data analysis and interpretation, as well as inversion and modelling techniques. This session also welcomes studies of extreme geophysical events from space and ground and attempts to integrate, model, and interpret the effects detected in separate geolayers.