There are over 1,500 active volcanoes in the world and 500 million people live at the foot of them, despite the risks involved.
Volcanoes have shaped the surface of the planet. They have marked out continents, made islands emerge, but also ravaged millions of square kilometres of land. Each year, almost 50 volcanic eruptions shake the surface of the earth. But the last super-eruption dates back more than 70,000 years. These unparalleled force of nature would lead to the extinction of many species and could bring us back to the ice age.
