Rare 500-year-old freeze-dried potatoes unearthed at Inca coastal site

Archaeologists digging at an Inca site on the arid coast of southern Peru have unearthed two rare, roughly 500-year-old freeze-dried potatoes.

The potatoes are among the only ones found in more than a century and would have been transported across the empire from the freezing peaks of the Andes. ...