Ancient Antarctic Bacteria Revived
Danny Rathjens writes "Frozen bacteria from Antarctica, estimated to be between five to eight million years old, were brought back to life simply by warming them up! NASA folks also participated since they think this can give them better clues on where to look for life on Mars."
Umm - how can a BACTERIA be a VIRUS since these are completely different organisms?
Around 1995 scientists extracted bacteria from an insect's stomach, that had been trapped in amber for 125 million years, and they lived.
A few years later, scientists revived bacteria that had been dormant inside a crystal of common table salt for 250 million years!
Even so, Mars has been geologically dead for 1.5 billion years, so I don't know how how these paltry 8 million years are suddenly so significant.
Every living thing that we have discovered on thsi planet so far has DNA. Everything. "Modern" (Eukaryotic) multi-celled and many single eleed organisms keep their DNA in the cell nuclei. Most bacteria (but not all) are of the "non-modern" (Prokaryotic) type. Their DNA just floats around in their cells. However they ALL have DNA.
Even viruses, which are debatable as to their status as organisms keep DNA around (though a few are RNA based and known as retro viruses. HIV is an example)