A New York Times-bestselling author explains how the physical world shaped the history of our species When we talk about human history, we often focus on great

Since the beginning of civilization, the origins of the Earth and Moon have been the subjects of continuing interest, speculation, and enquiry. These are also a

Questions about the origin and nature of Earth and the life on it have long preoccupied human thought and the scientific endeavor. Deciphering the planet's hist

Radioactivity - the breakdown of unstable atomic nuclei, releasing radiation - is a fundamental process in nature, and used to provide important applications in

Examples are the nature of Earth's oldest rocks, the origin of continents, extraterrestrial impact and mass extinctions of organisms, rates of organic evolution