Google Earth is a program that allows users to explore the world through satellite imagery, maps, terrain, 3D buildings, and more. It provides tools for cultural explorations, geography learning, architectural studies, spatial awareness, historical tours using rich media, and foreign language education. The document discusses how to use Google Earth to understand .kmz files, conduct advanced searches, create tours with placemarks, images, text and narration. It provides resources for educators and students to explore, create projects, and teaches how to open .kmz files correctly if having issues.