...archeologist Ruth Shady, who discovered the Caral site in Peru, has been threatened with death if she doesn't abandon investigating its treasures..."There are people who come and invade this site, which is state property, and they use it to plant," archeologist Daniel Mayta told AFP."It's hugely harmful because they're destroying 5,000-year-old cultural evidence." ...Developed between 3,000 and 1,800 BC in an arid desert, Caral is the cradle of civilization in the Americas.Its people were contemporaries of Pharaonic Egypt and the great Mesopotamian civilizations.It pre-dates the far better known Inca empire by 45 centuries.None of that mattered to the squatters, though,...