This 5,300-year-old skull shows evidence of the earliest known ear surgery - Ars Technica

Archaeologists also found a flint blade that may have been used as a cauterizing tool.

Enlarge/ Lateral view of a skull found at the El Pendón site in Spain, showing signs of a primitive form of ear surgery. 9 with 8 posters participating Archaeologists have excavated a 5,300-year-ol… [+4973 chars]

full article...