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Sciency stuff-Stromatolites, Earth's oldest living fossils..

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  • http://www.bbc.com/travel/story/2021011 ... ws%2Fworld

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    Stromatolites are living fossils and the oldest living lifeforms on our planet (Credit: MaXPdia/Getty Images)

    Stromatolites are living fossils and the oldest living lifeforms on our planet. The name derives from the Greek, stroma, meaning “mattress”, and lithos, meaning “rock”. Stromatolite literally means “layered rock”. The existence of these ancient rocks extends three-quarters of the way back to the origins of the Solar System.

    With a citizen scientist’s understanding, stromatolites are stony structures built by colonies of microscopic photosynthesising organisms called cyanobacteria. As sediment layered in shallow water, bacteria grew over it, binding the sedimentary particles and building layer upon millimetre layer until the layers became mounds. Their empire-building brought with it their most important role in Earth’s history. They breathed. Using the sun to harness energy, they produced and built up the oxygen content of the Earth’s atmosphere to about 20%, giving the kiss of life to all that was to evolve.

    It's a travel article, actually, but with an interesting sidebar about biological history. :D
    sutz
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  • Once again, Sutz - thank you! I always look forward to your Sciency stuff posts.
    Aussie Seahawk
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  • Thanks, mate! Sometimes I wonder if anybody reads them. :laugh:
    sutz
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  • sutz wrote:Thanks, mate! Sometimes I wonder if anybody reads them. :laugh:


    Ah Steve, we do, we just don't thank you nearly enough for them. I second it, thank you for these sciency threads. They are very entertaining and often educational.
    Aros
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  • Thanks for your intellectual and curiosity posts.

    Have a ways to go to get the Carl Sagan nomination but I appreciate your efforts.
    chris98251
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  • Appreciate it guys, but I think Carl Sagan has an heir apparent. :mrgreen:

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    sutz
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  • sutz wrote:Thanks, mate! Sometimes I wonder if anybody reads them. :laugh:


    I forward some to my closest friend here in Adelaide (I was Best Man at his wedding, well over 30 years ago) and he appreciates them! He's a very senior civil engineer; designed many bridges here in 40 years of employment.

    Pity he barracks for the Niners. :)
    Aussie Seahawk
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  • I read a lot of these, too.
    fenderbender123
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  • sutz wrote:Thanks, mate! Sometimes I wonder if anybody reads them. :laugh:


    I do! I just don't visit this side of .Net as often as I should.
    Very cool article thank you for sharing these.
    Jerhawk
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