After the destruction of the planet Atherton, Edgar must journey to a dark and damaged world named Earth in order to find the secrets of his civilization's past.
A look at the transformation of Earth, from a battered rock, includes photographs, graphs, charts, and diagrams to clarify complex scientific theories.
Ranks and describes ten of the greatest threats to Earth, including asteroid impact, loss of biodiversity, infectious disease pandemic, and freshwater shortage.
Photographs and illustrations describe the various layers beneath the Earth's surface, the movement of tectonic plates, what causes earthquakes and volcanic eruptions, and how the earth's surface has changed.
Examines the physical characteristics and conditions of the Earth, describing its position in relation to the sun and other planets and surveying humanity's attempts to penetrate its mysteries.
