WHAT'S INSIDE: GEOLOGY

Geology is the study of the composition and physical properties of rocks, minerals, gems and other related earth materials, including diamonds and crystals. Scientists gain an understanding of the Earth's history by studying its composition.
  • Geologic Processes
  • Geologic Time Scale
  • Minerals
  • Paleontology
FEATURED: GEOLOGY
FPO

Emperor Qin ordered 7,000 generals, cavalrymen and archers to protect his mausoleum. What's so odd about that? Well, they were made of terracotta.

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