Just Life.

Geologists have discovered microscopic burrows where some of Earth's earliest life forms bored their way into volcanic glass 3.5 billion years ago. The tubes, from rocks in South Africa's Barberton Greenstone Belt, retain traces of organic carbon left behind by the microorganisms, the authors say. The microbes etched their way into rocks that formed as lava oozed out across a sea floor in Achaean times. An international team published details of the work in the journal Science. Harald Furnes, of the University of Bergen, Norway, and his colleagues found tubular structures in the glassy rind on so-called pillow lavas. The volcanic rock itself has very little carbon. It's concentrated in these little specks inside the tubules due to life processes

Professor Karlis Muelenbachs, University of Alberta Researchers have previously identified similar structures called microtubules in present-day pillow lavas, where they were interpreted as the trails left by rock-munching microorganisms. Modern examples have been shown to contain nucleic acids and increased traces of carbon and nitrogen, the key elements of life. The team found ancient microtubules in the Barberton rock which are on average about four micrometers in width and 50 micrometers in length (a micrometry is a millionth of a meter). In the inner walls of these microtubules, the geologists found traces of carbon, which the authors claim are organic. Digging a hole "The volcanic rock itself has very little carbon. It's concentrated in these little specks inside the tubules due to life processes," co-author Professor Karlis Muelenbachs, of the University of Alberta in Edmonton, Canada, The rocks were altered after they were formed but the burrows were preserved
But any fossil evidence of the microbes themselves has long since disappeared: "They're good and cooked," Professor Muelenbachs explained. The rock has not lain unaltered since Achaean times: "It was pushed down into the Earth and cooked at well over 300 degrees (Celsius) for millions of years." As the rocks were squeezed and heated, they "metamorphosed". Volcanic glass transformed into a mineral called chlorite. But this was a subtle conversion, say the researchers, which preserved original structures such as the microtubules. The team claims observations of the fine structure of the burrows show they were overgrown by chlorite after being pushed beneath the Earth. This is a key piece of evidence which the researchers rely on to show that the tubules are much older than the metamorphism which transformed the Achaean rock. It rules out the suggestion that the tubules could have been made more recently. "It's like the London Underground," said Dr Roger Buick, associate professor of astrobiology at the University of Washington in Seattle, US. "The holes were dug 100 years ago, but they were made in 50 million-year-old rocks. Dating the rocks in London doesn't tell you the age of the London Underground." In 1999, Danish geologist Minik Rosing presented evidence of a chemical signature for primitive life forms in 3.7-billion-year-old rocks from Isua, Greenland. Sourced from bbc

Book club has found that their is evidence in rocks on earth that have the same composition as mars rocks, the only explanation for this is cross pollination of life form. Where there is matter there can also be the ingredients for basic life. still there are theories who suggest that dark matter or reverse matter can also contains life, only with different charged particles. Their will be more from Book club soon with mathematical data. For life to exist it have to follow basic form of development and creative life forms within space is probable, but also very rare. Society's like to believe that there is a grater force holding it together! Book club hopes that an understanding for human development, will be Humanities engine for future developments.