The twins, about 36 to 40 weeks old, probably suffocated during their mother's troubled labor nearly 8,000 years ago.
A copper awl is the oldest metal object unearthed to date in the Middle East.
A 6,500-year-old skeleton was found in the basement of the Penn Museum. See photos.
This diagnosis is 300 years too late.
Explore the unique items found in a 2,400-year-old family grave in Italy.