Mount Etna, the most active volcano of Europe, erupted on Christmas Eve, causing numerous earthquakes and closing the airport of Catania. Mount Etna, the most active volcano of Europe, erupted on Chr...
Read MoreThere are Roman concrete breakwaters built more than 1,500 years ago that still stand strong, maybe even stronger now than they were back then. A team of scientists from USA, China and Italy have disc...
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