Science, Maths & Technology
Why do volcanoes erupt?
...account of such an eruption (Vesuvius in AD 79) was written by Pliny the Younger. The eruption destroyed the cities of Pompeii and Herculaneum, and killed over 3500 people (one of whom was Pliny the Elder). [Vesuvius [Image: Alexandra Svatikova under CC-BY-SA licence]] Vesuvius [Image: Alexandra Svatikova under CC-BY-SA licence] A plinian eruption may last for hours or...