An artist's impression of multiple eruptions as a "super volcano" explodes.
The eruption of some of the largest volcanoes on the planet could be predicted several decades before the event, according to researchers.
Analysis of rock crystals from the Greek island of Santorini suggests eruptions are preceded by a fast build-up of magma underground, which might be detected using modern instrumentation.
Such volcanoes can produce enough ash and gas to temporarily change the global climate.
Read More: http://www.bbc.co.uk/news/science-environment-16834570
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