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The Big Rock Candy Mountain Oldoinyo Lengai, world's weirdest volcano.

Etna the Eternal Each eruption with its human response repeats a mythic drama.

A Hotspot Alternative The no-plumes model turns deep-Earth science on its head.

Hotspots Hotspots are signs of something deep going on.

It Must Come Down Landslides, even volcanic lahars, are good for something.

The Man Who Gave Everything Remembering Mount St. Helens and David Johnston, its victim.

Recipes for Calderas A paper posits a terrifying eruption type: the sustained blast.

Recipes for Volcanoes Cooking up a realistic volcano is not child's play.

Save the Geysers! Visit these crowd-pleasers all over the world and the Web.

Sleeping Well in Seattle This beautiful region faces ugly volcanic hazards.

Venus's Baffling Geology Earth's near-twin is almost entirely volcanic.

"Volcano" the Movie This preposterous pyro-spectacular is too loud to hear yourself scream.

The Volcanoes Geo-Quiz A dozen questions, a million imaginary dollars.

Volcano World Jupiter's amazing moon Io may teach us more about Earth.

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