An emergency rescue excavation was launched when a thousand-year-old pyramid suddenly appeared in the middle of the construction site.
Whether intentional or not, the way large settlements were built in southeastern Europe 6,000 years ago may have limited the spread of disease.
A powerful cosmic ray caused a spike in radiocarbon levels in an area of Greece in 5259 BC.
Electricians stumbled upon a bronze dagger and pottery in an ancient burial cave.
The might of the great Inca empire was partly built on a cruel and fearsome terror power, which the four found remains have shown.