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Carl Lipo, Professor of Anthropology and Associate Dean for Research, Binghamton University, State University of New York

Rocks on Rapa Nui tell the story of a small, resilient population − countering the notion of a doomed overpopulated island

Covering the ground with rocks is actually a good way to grow some crops in poor soil. Carl Lipo

Conventional wisdom holds that the island of Rapa Nui, also known as Easter Island, once had a large population that crashed after living beyond its means and stripping the island of resources. A new research study my colleagues and I conducted has struck another blow to this notion by using artificial intelligence to analyze satellite data about piles of rocks on this tiny island in the middle of the Pacific Ocean.

Our study looked at rock gardens, a form of subsistence farming, and determined that the island – just 15.3 miles (24.6 km) long by 7.6 miles (12.3 km) at its widest point – likely never held many more than the 3,000 or so people European explorers encountered in 1722.

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