Mt. Etna, Europe’s largest and most active volcano, erupted on Monday on the island of Sicily in Southern Italy. The eruption is expected to last several more days, though it does not seem to pose a threat to the population, which is a relief based on the volcano’s past violent eruptions. The last major eruption occurred in 1991. Although an eruption might seem like a big deal, the native Sicilians see it as a great thing: the ashes spread out from the eruptions are great for agriculture, and the volcano itself is a major tourist attraction.