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Peering deep below North America at buried rock slabs, geophysicists are rewriting the ancient history of the continent's western edge.
Rising almost 2,000 feet (610 meters) above the flat agricultural fields of the Great Valley of central California, the Sutter Buttes present a striking contrast to the land around them...
The number of dinosaur species in the Americas increased following tectonic activity that led to the creation of a mountain range, a study has suggested.Fifteen million years before the...