What Are Volcanoes? Crash Course Geography #21

Today we’re going to take a closer look at these beautiful but dangerous landforms as we explore the different types of volcanoes and trace the patterns of volcanic activity around the world.... Read more »

Killer Volcanoes NOVA Documentary 2017 (Full HD)

Follow a team of volcano sleuths as they embark on a worldwide hunt for an elusive volcanic mega-eruption that plunged medieval Earth into a deep freeze. The mystery begins when archaeologists find... Read more »
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