After centuries of rumor and speculation, archaeologists have finally confirmed the existence of a colossal underground ...

Even so, by 1570, the Inca had stopped using titanium dioxide. Last year, Kaplan and her colleagues learned that Incan craftspeople switched to lead white, which the conquistadors brought from Europe.

Item 1 of 3 Archaeologists work in the remains of an ancient ceremonial Inca bathroom, discovered in a sector known as Inkawasi (House of the Inca), at the archaeological site Huanuco Pampa, in ...