The tallest volcano in Europe, Italy's Mount Etna, and the world's most active volcano, Kilauea in Hawaii, erupting again.

Mount Spurr has been showing signs of an eruption since last year, but scientists think one is even more imminent.

Kilauea is the most active volcano in the world. It's located in southeastern part of the Island of Hawai'i in the U.S. state of Hawaii. The mountain is part of Hawai'i Volcanoes National Park ...