Detailed text transcripts for TV channel - BBCNEWS - 20210420:02:41:00
It's becoming — how to say? — hyperactive. the recent catastrophic eruption on new zealand's white island which killed 20 and injured a further 27 has highlighted the risk of visiting active volcanoes. but in coming here, i have been told by many people that this volcano is perfectly safe. etna certainly has one of the most sophisticated monitoring surveillance systems on earth. you have instruments that record any sort of ground vibration, then we measure gas emission and then magnetism and gravity and infra—sound, which are acoustic signals at very low frequencies that we cannot hear, ...