Humans 80,000 Years Older Than Previously Thought?
The tools were uncovered in the 1970s at the archaeological site of Gademotta, in the Ethiopian Rift Valley. But it was not until this year that new dating techniques revealed the tools to be far older than the oldest known Homo sapien bones, which are around 195,000 years old.
Using argon-argon dating—a technique that compares different isotopes of the element argon—researchers determined that the volcanic ash layers entombing the tools at Gademotta date back at least 276,000 years.
comments powered by Disqus
- Shipwreck Found Under World Trade Center Traced Back To Colonial Era Philadelphia
- Bob Dallek in the NYT gives a rave review of John Dean's history of Watergate cover-up
- Ex-President George W. Bush Authors Book About His Father
- Tears, and Anger, as Militants Destroy Iraq City’s Relics
- Europe notes 100th anniversary of World War I
- Why Benny Morris is both right and wrong
- Professor Ilan Pappé: Israel Has Chosen to be a 'Racist Apartheid State'
- History Professor: Convicted Cop Killer Mumia Should Be Celebrated Like Martin Luther King Jr. in Schools
- Robert Drew, Cinema Verite Documentarian, Dies at 90
- Rick Perlstein: “Ronald Reagan absolved America almost in a priestly role not to have to contend with sin. The consequences are all around us today”