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

Where Volcanoes Are Born Most volcanoes form at the boundaries of Earth's tectonic plates, which are huge slabs of crust and ...

Learn about how volcanoes are formed and the ways they erupt Chiara Maria Petrone, Roberto Scandone, and Alex Whittaker On February 20, 1943, Dionisio Pulido and his family were working in their ...

Some volcanoes, such as the Cascade volcanoes up in Washington and Oregon, are of the type called a stratovolcano. These steep volcanoes sometimes erupt explosively and other times have calmer lava ...

Forbes contributors publish independent expert analyses and insights. David Bressan is a geologist who covers curiosities about Earth. How and if a volcano explodes depends on how and when bubbles of ...

Countries with the Most Volcanoes: Volcanoes are powerful openings in the Earth’s crust where hot lava, ash, and gases escape from below the surface. Some countries have more volcanoes because they ...