April 08, 2014

1:00 PM | How It Works: The Inner Earth
Plate tectonics—the theory that explains the sinking, spreading, and slip-sliding of big chunks of Earth’s surface—is a bedrock of geology. But it can’t explain what happens to plates once they sink, or account for the forces that drive many of the planet’s volcanic hotspots. Today, advances in seis­mology, geochemical analysis, and computer modeling have enabled researchers to collect a wealth of new geological data about our planet and form a complementary […]
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