Now, a new LIDAR survey suggests that civilization was even larger than archaeologists imagined, hinting at a people that built as many as 30,000 earthworks and had a peak population of up to 3 million people around 200 CE. The...

Built from stones weighing between 2 and 25 tonnes (2 to 28 tons), the structure of Stonehenge demonstrates a scale of construction hard to imagine before the invention of the wheel. The mystery deepens when you consider that the stones...

Newly excavated bones from Gran Dolina cave in Spain reveal an ancient human relative practiced cannibalism on adults and children, but researchers still don't know why.

At first glance, Earth's biggest geological disasters seem to have little in common beyond their sheer scale. But for decades, scientists have wondered whether these seemingly unrelated events might actually follow a hidden rhythm stretching back hundreds of millions of...