This course provides an overview of the Earth for the past 4.6 billion years. Students explore the concept of geologic time as they delve into the vast past of our evolving planet. Major emphasis is placed on tracking the evolution of life, from the simplest single-celled organisms of the ancient Earth to today’s diverse floras and faunas. Another major focus is the linkage among abiotic and biotic systems—the lithosphere, atmosphere, hydrosphere, and biosphere did not and do not evolve independently. The laboratory component of this course is designed to familiarize students with the rocks and fossils that archive the history of Earth. The class includes a fossil-collecting field trip. Required for geology majors. Three hours lecture and two and a half hours lab per week. No prerequisites.