The product is a brand new sealed DVD+ guidebook titled “How the Earth Works” by Michael E. Wysession. It belongs to the subject area of science and is part of the Great Courses series by Teaching Company, LLC. The DVD includes 48 half-hour lectures that cover a wide range of topics related to the Earth’s formation, geologic forces, and natural phenomena such as earthquakes, volcanic eruptions, and tsunamis. The content is designed for adult education level and is presented in English language. With a focus on the Earth’s evolution and current state, this DVD set is a comprehensive resource