One known Inca method for cutting through rock without iron was rather ingenious, in that it required comparatively limited physical exertion. Rather than hacking at the stone with large tools ...

The Inca Road was built by engineers and laborers working with bronze and stone tools and llamas. At the height of the Inca Empire, it integrated nearly ten million people from a hundred nations.

Remarkably, the Inca managed to forge this vast society without the wheel, the arch, money, iron or steel tools, draft animals ... lined valleys with immaculate stone paths and carved spiral ...

When Japanese scientists wanted to learn more about how ground stone tools dating back to the Early Upper Paleolithic might have been used, they decided to build their own replicas of adzes ...

Scientists have unearthed more than 300 stone tools at the Nyayanga site in southwestern Kenya (pictured in 2014, prior to excavation). Photograph by T.W. Plummer, Homa Peninsula Paleoanthropology ...

Not anymore. Archaeologists found the pair of stone quarries in the mountains of Cañete Province and identified them as being used by the Inca empire during its final years, Peru’s Ministry of ...

When monkeys in Thailand use stones as hammers and anvils to help them crack open nuts, they often accidentally create sharp flakes of rock that look like the stone cutting tools made by early humans.

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