|Manu||Date: Monday, 21-March-2011, 5:19 PM | Message # 1|
It was a discovery that scientists proclaimed was the oldest evidence of life on our planet.
But researchers who thought they had found 3.5 billion-year-old bacteria fossils in Australian rock have been left red-faced after U.S geologists debunked their findings.
A team from the University of Kansas said the microscopic structures are nothing more than tiny gaps in the rock that are packed with lifeless minerals.
Instead of primeval oxygen-producing cyanobacteria, they were found to be bits of the iron mineral hematite.
The scientists who reexamined the rock known as the Apex Chert, have published a study in the journal Nature Geoscience.
Full article/source - http://www.dailymail.co.uk/science....ts.html