Explore how North America is changing as its deep cratonic root thins and pieces are dripping into the Earth's mantle.

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Seismic mapping of North America has revealed that an ancient slab of crust buried beneath the Midwest is causing the crust ...

The Earth Mapping Resources Initiative, or Earth MRI, is a federal program developed by the U.S. Geological Survey that aims to identify and map the country’s underground deposits of critical minerals ...

The 24 hour Surface Analysis map shows current weather conditions ... Use of surface analyses began first in the United States, spreading worldwide during the 1870s. Use of the Norwegian cyclone ...

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Here’s the population breakdown of the 100 largest U.S. cities based on the most recent data, plus the 2020 numbers and ...