The objective of this book is to upgrade hydraulic fracturing technology that is effective in its purpose and sustainable in its impacts on communities and environments by bringing together hydraulic fracturing experts not only from the petroleum industry, but also from other application areas of hydraulic fracturing such as mining and geothermal energy production. Some of the important topics discussed are induced seismicity, coupled modeling, well completions and fracture initiation, flow paths and networks, injection and efficiency, and multiple hydraulic fracture growth.