Faces of Earth - الحلقة 4

Explosive volcanic eruptions, earthquakes, floods and even human beings contribute to the constant changes on the Earth's surface. Uncover the deep mysteries of our planet with top geologists in Faces Of Earth. Using state-of-the-art computer animation and stunning photography, these four in-depth, compelling programs explore how these forces shape the Earth and how, in turn, the Earth has shaped human evolution.