A riveting introduction to the complex and evolving field of geospatial intelligence. Although geospatial intelligence is a term of recent origin, its underpinnings have a long and interesting history. Geospatial Intelligence: Origins and Evolution shows how the current age of geospatial knowledge evolved from its ancient origins to become ubiquitous in daily life across the globe. Within that framework, the book weaves a tapestry of stories about the people, events, ideas, and technologies that affected the trajectory of what has become known as GEOINT. Author Robert M. Clark explores the historical background and subsequent influence of fields such as geography, cartography, remote sensing, photogrammetry, geopolitics, geophysics, and geographic information systems on GEOINT. Although its modern use began in national security communities, Clark shows how GEOINT has rapidly extended its reach to other government agencies, NGOs, and corporations. This global explosion in the use of geospatial intelligence has far-reaching implications not only for the scientific, academic, and commercial communities but for a society increasingly reliant upon emerging technologies. Drones, the Internet of things, and cellular devices transform how we gather information and how others can collect that information, to our benefit or detriment.