Join Patrick, Liam, and Pheely as we speak with our geophysicist guest Zoë Vestrum, a PhD candidate at the University of Alberta. We discuss her research involving magentotellurics and how she studies the inner structure of the Earth using its own electromagnetic fields. It turns out there is much to be learned, and our current understanding needs improvement. We also talk about the science of geothermal energy, and end the episode with a story about plate tectonics and how the Earth moves.