Photographs of Neolithic shell trumpets from Catalonia that still produce sound today. Credit: M. López-García, M. Díaz-Andreu, 2025 All the specimens are made from the same species of marine shell, ...
If you were standing on the edge of a canyon in the San Juan Basin of the Colorado Plateau about 1,200 years ago, you may have heard a loud, distant sound reverberating off the rock faces and ...
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