Gabriela Farfan, the Smithsonian's curator of gems and minerals, answers the internet's burning questions about gemstones. Are all minerals crystals? How are diamonds cut? How do geodes form? Is the ...
Researchers found this hand ax, which appears to have been shaped around a geological feature imprint. R. Barkai et al., Tel Aviv, 2026 under CC BY-NC-ND 4.0 Many modern humans love collecting unique ...
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