Book excerpt: Earthquake prediction studies based on electromagnetic techniques have drawn considerable global attention in recent years. This technique is based on ground and satellite based monitoring of electromagnetic signals in a broad frequency range between DC and VHF employing variety of sensors. Definite earthquake precursors have been reported from these experiments. Besides the above, ionospheric perturbations and geochemical anomalies have also been reported prior to the occurrence of the earthquakes. This book contains some important research output in the above fields obtained by well-known researchers. More precisely, there are descriptions on recent progress in VAN method, anomalies in ULF/VLF signals, ionospheric parameters and Schumann resonance etc. The book also includes one topic not related to seismicity which deals with space weather, Trimpi phenomena, and neural network approach to TSP solutions etc.