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Small stone tools in South China reflect a history of adaptation. A new analysis shows that people repeatedly chose small, portable designs as climates shifted and groups moved.

The scale is large for archaeology. A team examined more than 12,000…

Physicists at a New York collider have tightened the search for a long-predicted tipping point in nuclear matter. The new result marks a sharp feature at 19.6 billion electron volts per nucleon pair that could signal where the strong force…