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Since humankind's earliest days, the rise of civilization led to a huge increase in the number and types of diseases that afflict the human population. Early prevailing theories about the causes of and cures for disease included superstitious beliefs, the application of herbal remedies, and the well-meant but ultimately misguided humoral theory of disease--a concept that persisted into the 19th century. Presenting a comprehensive history of the development of the germ theory of disease, Germ Theory profiles the major scientists who helped the theory, including Leeuwenhoek, Jenner, Pasteur,...

How did El Nino change weather patterns and affect crops around the world? What are humans doing to help or hinder the health of the world's oceans? And what hurricane event happended for the first time since 1893? Whether you're a student writing a report, or a professional in need of some quick answers, you'll find what you're looking for in the "Earth Almanc." Covering the state of the four major geophysical topics associated with the Earth: the atmosphere, oceans, fresh water, and land, this new edition presents an incredible amount of usable information about the changes in our planet...