Excavations in Sudan have uncovered 7,000-year-old bone tools that offer rare evidence suggesting the modern Masai practice of bleeding cows dates back to ancient times.
a mass grave below the streets of london may help scientists solve a 350-year-old mystery. archaeologists believe they have found a so-called plague pit which could give clues about the disease that killed as many as 100,000 people during its last outbreak in london. kellie morgan has more. reporter: in the middle of london a mass grave is unearthed. dozens of skeletons huddled together. it is a grim find but an exciting one. archaeologists suspect these are victims of the great plague of 1665. we uncovered what is an open burial pit with at least 40