This interdisciplinary volume addresses the growing international concern for Earth's climate, and is structured in five sections: climate, atmosphere, hydrosphere, human involvement, and natural processes. The contributors discuss problems caused by the inadverdent byproducts of human activities, such as the emission of carbon dioxide when fossil fuels are burned; purposeful modifications of the environment by humans, such as the disturbance of the hydrological cycle; and natural global environmental issues, such as volcanic eruptions and earthquakes. ISBN 0-89226-033-5: $34.95.