This pragmatic book introduces key concepts and skills to prepare students to understand and use geographic information systems (GIS). The text thoroughly explains what geographic information is, how it is represented and analyzed, and what it communicates about human and environmental activities an[...]

One day Raymond Francis, a chemist and a graduate of MIT, found himself in a hospital, battling for his life. The diagnosis: acute chemical hepatitis, chronic fatigue, multiple chemical sensitivities, and several autoimmune syndromes, causing him to suffer fatigue, dizziness, impaired memory, heart [...]