Earth science is the study of the Earth, its origin, its structure, the changes it has undergone, and the past and future consequences of those changes. Its four major branches include meteorology, oceanography, astronomy, and geology. From the formulation of the three major principles of modern geology to the publishing of Principles of Geology, Earth Science profiles 10 influential people who made amazing discoveries in Earth science. Each chapter contains relevant information on the scientist's childhood, research, discoveries, and lasting contributions to the field and concludes with a chronology and a list of print and Internet references specific to that individual.