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World in Motion: Understanding Earth's Interior
01:54

World in Motion: Understanding Earth's Interior

Many scientists believe the plate tectonics process begins deep within the Earth. The challenge is to gather reliable data about an area that no one has ever actually explored--at least not directly.
Subject: interior
Transcript: [bender:] there's still a raging debate that goes on to this day As to exactly what the interior looks like, What the composition is, etcetera. We