Discovery of carbon dating
OI founder James Henry Breasted purchased the artifact, and many others, during his honeymoon trip to Egypt in 1894-95.
The artifact, more than 2,000 years old, dates to the Egyptian Ptolemaic period.
All the tiny pieces of bone were recovered from a key archaeological ...
The oldest fossils of the familiar pine tree that dominates Northern Hemisphere forests today has been found by researchers.
Archaeologists testing the ages of artifacts from multiple sites across the Eastern and Western hemispheres found that civilization originated simultaneously around the world rather than in Europe.
And Libby himself, when he analyzed wood samples from trees once buried beneath glacial ice, documented that North America's last Ice Age ended approximately 11,000 years ago -- not 25,000 years ago as previously believed.