Humankind is under the permanent influence of the geological environment. Roles of some geological biotropic factors, such as volcanic explosions, strong earthquakes, and geochemical anomalies, have been well studied. Little is known about biotropic effects of the Earth's fluid degassing, geomagnetic activity, natural background radiation, fluid migration and gas emission within fault zones, mild seismicity, cyclicity of tectonic and climatic processes, etc. This book is the first attempt to synthesise the interdisciplinary knowledge on all geogenic factors influencing humans, society, and civilisation.