Hybrid Librarian

Earth's 10 Most Important Events in History (2014x6)

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The 10 most important steps in the formation of Earth as we know it, including formation of the Solar System and the solar nebula hypothesis; the Theia impact and birth of the moon; the origin of the first continents, oceans and atmosphere's greenhouse gases; meteor showers and the origin of life; Pangaea and the Cambrian explosion; the reign and extinction of the dinosaurs through a large asteroid impact; and the rise of human civilization.