(Express) – One of the world’s foremost volcanologists has warned that there are around 100 “explosive” volcanoes around the world that could cause devastation at a moment’s notice. The further caveat is that no one can be sure which will blow first. Professor Stephen Sparks, from the University of Bristol, was discussing which volcano is currently the world’s deadliest – but couldn’t settle on a single one. He told

Express.co.uk: “If we’re talking about very large eruptions that could have a big global impact, they don’t have to be super eruptions to have big effects on their surroundings and things like climate, the atmosphere. It’s likely to be a volcano that hasn’t had an eruption for a long time and those volcanoes are very quiet. “Nothing much will be happening so they’re quite hard to spot. READ MORE