A volcanic eruption in the Reykjanes peninsula of south-west Iceland has captured the world’s attention. But how dangerous are volcanoes, and how much do we know about their activity?

The BBC's Science correspondent Pallab Ghosh explains why Iceland is such a hotbed of volcanic activity and the health risks that volcanoes can pose. Nick Beake, the BBC’s Europe correspondent, describes his helicopter ride over the Grindavik volcano. And Dr Kenna Rubin, a volcanologist at the University of Rhode Island, explains the different types of volcanoes you can find all around the world.

We also speak to Anna and Sigrún — two of the more than 4,000 residents of Grindavik who have been evacuated to safety.

Email: whatintheworld@bbc.co.uk WhatsApp: +44 0330 12 33 22 6 Presenter: Hannah Gelbart Producers: William Lee Adams, Chelsea Coates, Benita Barden Editors: Verity Wilde and Simon Peeks

Fascination and fear: Why are volcanoes a hot topic? 15:04 Share

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Fascination and fear: Why are volcanoes a hot topic?