When the Earth Froze
The rocks tell us that at least twice, the earth has frozen over from the poles to the equator
Geology That’s Alive
Volcanologist Richard Fiske loves fieldwork most of all—when he’s on the job, the Earth moves
Mapping the Margins
It’s a violent world at the edges of our continental shelves, which could serve as a geology textbook
Geologists Worry About Dangers of Living ‘Under the Volcano’
The experts believe Mount Rainier will give plenty of notice before it erupts again—the problem is that it can kill in other ways
Phenomena, Comment and Notes
When a drop of rain carries a particle of dirt off the land and into the sea, there are repercussions from deep within Earth to the nearer reaches of space
The Floods That Carved the West
In a geological catastrophe, a lake exploded through an Ice Age dam, and its waters swept across the Pacific Northwest; signs of its passage visible
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