The Conversation

Explainer: why volcanoes erupt

Author: The Conversation

Piton de la Fournaise or "Peak of the Furnace" on Reunion Island is one of the world's most active volcanoes, shown erupting in August 2015.AAP/NewZulu/Vincent Dunogué

Some people believe volcanic eruptions are caused by fate. Others believe a volcanic eruption is a sign that a mountain is upset because residents living nearby have sinned.

But...

More...

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