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Sima de los Huesos: Inside the 'Pit of Bones' with thousands of mysterious human fossils
The Atapuerca Mountains in northern Spain are home to the Sima de los Huesos, or "Pit of Bones," which has offered one of the ...
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Archaeologists uncovered a cache of 1.5 million-year-old bone tools. They’re trying to determine who made them
Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. Archaeologists have ...