Dimensions: Approximately 1.75 inches per side. Design: Engraved with the periodic table symbol for copper (Cu), atomic number (29), atomic mass (63.55), melting point (1085°C), and density (8.92 g/cc ...
A cube-shaped human skull discovered by researchers in Mexico could yield new insights into an ancient cultural practice known as “intentional cranial deformation.” The skull belonged to a 40-year-old ...
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