"In 1996, a rock that was thought to have somehow made its way to Earth from Mars was a media sensation as news outlets proclaimed “Life on Mars!” A microtubule or filament-like structure was
thought to be the fossilized remains of some sort of primitive life. That’s because it was similar to alleged fossils on Earth that were claimed to be 4 billion years old.Now a team from the University of Edinburgh has created similar-type structures in the lab that closely mimic the alleged Earth/life-on-Mars structures. They did this by mixing iron-rich particles with alkaline solutions that contained silicates or carbonates.
Researcher McMahon said, “These results call for a re-examination of
many ancient real-world examples to see if they are more likely to be
fossils or non-biological mineral deposits.” Of course, we agree.
Indeed, if many of these ‘ancient-life’ examples turn out to be nothing
of the sort, then it would be a serious dent for the idea of evolution
of alleged primitive life billions of years ago." CMI