More terracotta warriors; earlier arrival of modern humans in western Europe; huge cache of inscribed sherds in Egypt; hallucinogens as source of power in ancient Peru

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Excavations at the tomb of China’s first emperor reveal 20 more terracotta warriors.

New study pushes back the arrival of modern humans in Europe.

Large cache of pottery notepads sheds light on daily life in ancient Egypt.

Study suggest indigenous Peruvian leaders used hallucinogens to build social ties and win loyalty.