Ancient DNA reveals for the first time where workers buried at Machu Picchu more than 500 years ago came from within the lost Inca Empire.

A new study using accelerator mass spectrometry (AMS) to date human remains shows Machu Picchu is up to several decades older than previously thought.

Brighter areas, such as agricultural land, aren't hospitable to big-eyed birds, research finds. The study links the size of bird eyes, habitat, and foraging style.

The discovery of a carved stone box suggests that Lake Titicaca was a locus of ritual and ceremonial activity by the Inca, researchers say.

Big data could give archaeology a big boost, researchers show with new work on the Inca Empire. But they have some caveats about its power, too.