Thursday Mar 27
Earth & Sky
What causes landslides?
The primary cause of a landslide is the influence of gravity acting on weakened materials that make up a sloping area of land.
Indonesia's Deadly New Volcanic Eruption 'Heard' Around the World
A powerful eruption yesterday evening at Indonesia's Mount Kelud volcano, in eastern Java, hurled ash 9 miles into the sky, grounding air travel and sending out sound waves picked up by more than a dozen nuclear weapon detectors.
Extraordinary Video of Pyroclastic Flows From the Eruption of Sinabung
In terms of the destruction they wreak upon the landscape, few volcanic hazards can top pyroclastic flows .