The Earth's Furies Season 1 Episode 2 Volcanoes

Thousands of volcanoes rise from the earth's surface and over 1,500 of them are active. While they are essential to life on the planet, their eruptions remind us that we are living on top of an explosive cauldron. 500 million people live at the foot of active volcanoes. Although experts have today uncovered some of their secrets, they remain powerless in the face of this devastating phenomenon.