Italy's Catania airport has resumed full operations a day after an ash cloud from Mount Etna's latest eruption in eastern Sicily forced it to shut down. At least 130 tremors have rattled villages on the slopes of the volcanic mountain earlier this week, with the most powerful quake registering a magnitude of 4.3 on Monday. The series of quakes appeared to be diminishing on Tuesday. Etna, located on the Mediterranean island of Sicily, is one of three active volcanoes in Italy.