A global early-warning system strives to keep aircraft safe from volcanic eruptions. Mark Piesing A small aircraft flies over the Bardarbunga volcano as it spews lava and ash in southeast Iceland. The ...
How do volcanoes work? What happens beneath their surface? What causes the vibrations – known as tremor – that occur when magma or gases move upward through a volcano's conduits? Professor Dr. Miriam ...
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