Discover interesting facts about volcanoes, including why and where they form and history's deadliest eruption.
Kilauea volcano in Hawaii is erupting with fountains of lava. Check out a USGS livestream from within the Halema'uma'u crater.
To be considered active, a volcano must have erupted at some point during the Holocene, but dormant and extinct are a little harder to define.
Six earthquakes were recorded at the Mount Adams volcano in September — a significant increase on the normal rate of one every two to three years.
Scientists have found a way to monitor volcanic carbon dioxide levels — one of the first signs a volcano might be about to blow — that doesn't involve trekking up a mountain.
The closer a volcano is to erupting, the greener the trees around it ...
An anomaly in Mars' mantle could trigger volcanoes to erupt — and may ...
Taftan volcano near the border of Pakistan has shown signs of unrest in recent years.