Announcement

Collapse
No announcement yet.

World archaeology in the news.

Collapse
This is a sticky topic.
X
X
  • Filter
  • Time
  • Show
Clear All
new posts

  • Originally posted by G David Bock View Post
    This could fit into a "climate change" thread also ...

    Humans didn't cause mass animal extinctions in Africa, like previously thought, study says
    ....
    A new study disagrees with a longstanding view that humans wiped out large animals that previously occupied Africa.

    In research published in the journal Science on Friday, authors analyzed records on megaherbivore communities in eastern Africa over seven million years. A megaherbivore is a mammal weighing more than 2,000 pounds. They concluded that extinctions of diverse mammal communities in Africa occurred before evidence of human hunting.

    The animal decline might have instead been because of environmental factors such as declining atmospheric carbon dioxide and expansion of grasslands, researchers write.

    "Low CO2 levels favor tropical grasses over trees, and as a consequence savannas became less woody and more open through time," John Rowan, a postdoctoral scientist from the University of Massachusetts Amherst who was involved in the research, said in a statement. "We know that many of the extinct megaherbivores fed on woody vegetation, so they seem to disappear alongside their food source."
    ...
    https://www.usatoday.com/story/news/...ys/2090400002/
    What the study actually said was that the decline of these species started before humans came on the scene. Humans could still have contributed to their final extinction
    Human history becomes more and more a race between education and catastrophe (H G Wells)
    Mit der Dummheit kaempfen Goetter selbst vergebens (Friedrich von Schiller)

    Comment


    • Originally posted by MarkV View Post

      What the study actually said was that the decline of these species started before humans came on the scene. Humans could still have contributed to their final extinction
      The interesting thing is that the Global Warming cult didn't put a hit out on the paper for pointing out low co2 could cause extinctions. These kinds of heresies are likely to become more common as the dire consequences predicted by alarmist fail to materialize.
      We hunt the hunters

      Comment


      • Originally posted by wolfhnd View Post

        The interesting thing is that the Global Warming cult didn't put a hit out on the paper for pointing out low co2 could cause extinctions. These kinds of heresies are likely to become more common as the dire consequences predicted by alarmist fail to materialize.
        Exactly! ^

        Not only is the pro-ACC/AGW crowd hypocritical, but as pointed out in threads dealing with this topic, too many don't understand the science of biology and climate, to specify a couple, but are also ignorant of, or choose to ignore, earlier climatic conditions on Earth that invalid their politically driven pseudoscience. At their core, they are anti-Life.
        Whiskey for my men, and beer for my horses.
        TANSTAAFL = There Ain't No Such Thing As A Free Lunch
        Bock's First Law of History: The Past shapes the Present, which forms the Future. *

        Comment


        • Originally posted by MarkV View Post

          What the study actually said was that the decline of these species started before humans came on the scene. Humans could still have contributed to their final extinction
          Also from the article link;
          ...
          Analysis suggests 28 lineages of megaherbivores went extinct, starting around 4.6 million years ago, according to lead author Tyler Faith, an assistant professor in the Department of Anthropology at the University of Utah. Today, only elephants, hippopotamuses, giraffes and white and black rhinoceroses exist.
          ....

          This is long before humans began to appear. And regards the extinctions going back 10,000+ years it appears human populations would have been rather small to have much significant effect.
          Whiskey for my men, and beer for my horses.
          TANSTAAFL = There Ain't No Such Thing As A Free Lunch
          Bock's First Law of History: The Past shapes the Present, which forms the Future. *

          Comment


          • Originally posted by G David Bock View Post

            Exactly! ^

            Not only is the pro-ACC/AGW crowd hypocritical, but as pointed out in threads dealing with this topic, too many don't understand the science of biology and climate, to specify a couple, but are also ignorant of, or choose to ignore, earlier climatic conditions on Earth that invalid their politically driven pseudoscience. At their core, they are anti-Life.
            Anti human for sure, anti life only from the strange idea that co2 is a pollutant.
            We hunt the hunters

            Comment


            • Originally posted by wolfhnd View Post

              Anti human for sure, anti life only from the strange idea that co2 is a pollutant.
              Yeah, ... a "pollutant" to 99+% of biomass on this planet which they can't exist without. And we don't exist without them. The pro-ACC/AGW gorebots are anti-life and a threat to human survival.
              Whiskey for my men, and beer for my horses.
              TANSTAAFL = There Ain't No Such Thing As A Free Lunch
              Bock's First Law of History: The Past shapes the Present, which forms the Future. *

              Comment


              • British Researchers Claim Lost City of Atlantis has Been Found in Spain

                ...
                The Greek philosopher Plato wrote that Atlantis was a technologically advanced city that sank into the ocean some 12,000 years ago.

                While most assume it’s a legend, some people, whether trained archaeologists or amateur treasure seekers are caught up with trying to find it.

                According to one British company, the lost city of Atlantis has been found in Spain.
                ...
                The firm used aerial photography and satellite data from Landsat and Greek texts–as well as visiting the site–to identify Atlantis.

                They say the specific location is in Spain’s present day Doñana National Park, on the country’s southwestern coast near Seville.

                The firm say that what they’ve observed matches up to descriptions in Plato’s dialogues, and that what appears to be “concrete” at the site is 10,000 years old.

                The team found what they say are the remains of bases of ancient towers, and the ruins of a huge temple that is close to what Plato wrote about.
                ...
                https://www.thevintagenews.com/2018/...as-been-found/
                Whiskey for my men, and beer for my horses.
                TANSTAAFL = There Ain't No Such Thing As A Free Lunch
                Bock's First Law of History: The Past shapes the Present, which forms the Future. *

                Comment


                • 10,000 year old concrete is interesting. Could be that it is only technically concrete and bears little resemblance to what we think of as concrete. Using available materials as cement is very different than manufacturing cement.

                  Anyway I'm curious...
                  We hunt the hunters

                  Comment


                  • Originally posted by wolfhnd View Post
                    10,000 year old concrete is interesting. Could be that it is only technically concrete and bears little resemblance to what we think of as concrete. Using available materials as cement is very different than manufacturing cement.

                    Anyway I'm curious...
                    Given that Roman concrete had a durability about 40 times that of modern stuff and actually got stronger with age one shouldn't scoff at the ancients' ability in this regard. Roman cement was made of very similar ingredients to modern cement and made in a similar fashion but their concrete used to include volcanic ash with the cement and was mixed with sea water. Recent research with modern instrumentation has shown that this caused the slow formation and growth of crystalline forms that bind it all ever firmer over the centuries, The Romans never knew why their concrete was so good - just that it was - so they never changed the recipe. Perhaps they nicked it from an older civilisation as they did so much
                    Human history becomes more and more a race between education and catastrophe (H G Wells)
                    Mit der Dummheit kaempfen Goetter selbst vergebens (Friedrich von Schiller)

                    Comment

                    Latest Topics

                    Collapse

                    Working...
                    X