The five main types of volcanic eruptions and their characteristics, depending on the composition and viscosity of the magma. VIDEOGRAPHIC Border Patrol finds massive drug-smuggling tunnel that ...

California has seven active volcanoes, each with a unique eruption history, categorized by type and threat level. The USGS monitors these volcanoes, providing information to authorities and the ...

Arsia Mons, which dwarfs Earth's tallest volcanoes, and its two neighboring volcanoes are often surrounded by water ice clouds, especially in the early morning. The image released Friday marks the ...

Lava fountains create some distinct volcanic products thanks to the runny nature of the lava erupting. In places like Hawai’i, Pele’s tears and hair are common – they are droplets and strands of lava, ...