These ghostly hoops have been spotted above volcanic events around the world. But how they form has long been a mystery.

Italy's Campi Flegrei volcano may have had a more explosive history than experts thought. A new study finds that the volcano ...

Groups of tourists had to seek safety on Monday, when Italy’s Mount Etna, Europe’s tallest active volcano erupted. The volcano is located on the Italian island of Sicily and is a popular tourist ...

A volcanologist answers your questions about glass-shard hairballs, cooking breakfast over lava, Gollum's end on Mount Doom, ...

POZZUOLI, Italy — In Greek and Roman mythology, the Campi Flegrei volcano is depicted as the opening to the underworld. Its prehistoric eruptions blocked out the sun, turning summer into winter and ...

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Italy’s Campi Flegrei volcano is depicted in Greek and Roman mythology as the entrance to the underworld. Its eruptions thousands of years ago... Is Italy’s Super Volcano Getting Ready to Erupt? Italy ...

ROME -- A giant explosion from an Italian volcano sent locals and tourists running for cover on Wednesday. Stromboli, a volcano located on a small island off the coast of Sicily, erupted, sending a ...

A volcanic explosion, somewhere in the tropics, may have increased European trade with central Asia—which brought fleas ...