HUMAN EVOLUTION

-


 Homo sapiens, the name that scientifically designates our species, is the result of a long evolutionary process that began in Africa during the Pliocene Epoch. Very few fossils have been found, and there are no clear clues about what caused the amazing development of the culture. some believe that a change in the brain or vocal apparatus permitted the emergence of a complex language. Other theories hypothesize that a change in the architecture of the human mind allowed Homo sapiens to use imagination. what is certain is that hunting and gathering was a way of life for 10,000 years until people formed settlements after the ice age and cities began to emerge.

 PRIMATES DEVELOP

       Perhaps motivated by climatic change, some five million years ago the species of primates that inhabited the African rain forest subdivided, making room for the appearance of the hominines, our first bipedal ancestors. from that time onwards, the scientific community has tried to reconstruct complex phylogenetic trees to give an account of the rise of our species. DNA studies on fossil remains allow us to determine their age and their links with different species. Each new finding can put into question old theories about the origin of humans.

      Scientists maintain that modern humans originated in Africa because that is where they have found the oldest bones. In addition, the genetics has just arrived at the same conclusion, since the DNA studies have confirmed that all humans are related to the African hunter-gatherers who lived some 150 million years ago. studying the fossils, the experts also found that human skulls from two million years ago already show the development of two specific protuberances  that in the present day brain control speech, the capability that perhaps was as important for early humans as the ability to sharpen a rock or throw a spear. Today thanks to science it is possible to affirm that the brain has changed drastically in the evolutionary coarse of the species, reaching a greater complexity in humans. This has facilitated, among other things, the capacity to store information and the flexibility in behavior that makes a human an incredibly complex individual.

      History is full of leaps. For thousands of years nothing may happen, until all of a sudden some new turn or discovery gives an impulse to humankind. For example, with the domestication of animals and the cultivation of plants a profound societal revolution occurred. This period of pre history, called the Neolithic, which dates to 10 million years ago, opened the way for the development of civilization. With the possibility of obtaining food without moving from place to place, the first villages where established and produced great demographic growth. 

Comments

Post a Comment

Popular posts from this blog

FIRST HUMAN 2

-
Image
 Able Hunters Descendants of Homo heidelbergensis, the Neanderthals were the first inhabitants of Europe, western Asia and northern Africa. Diverse genetic studies have tried to determine whether it is a subspecies of Homo sapiens or a separate species. According to fossil evidence, Neanderthals were the first humans to adapt to the extreme climate of the glacial era, to carry out funerals and to care for sick individuals. With a brain capacity larger than that of present-day humans, Neanderthals were able to develop tools in the style of the Mousterian culture. The cause of their extinction is still under debate.                 Homo neanderthalensis                                                                                  ...
Read more

CULTURE

-
Image
       АIthough questions remain about how culture originated, it is almost impossible to determine which things of the human world are natural and which are not. Scientists of many disciplines are trying to answer these questions from the evidence of prehistoric life found by paleontologists. The subspecies of mammals to which man belongs, Homo sapiens sapiens, appeared in Africa some 150,000 years ago, disseminated through the entire Old World some 30,000 years ago (date that the oldest signs of art were found) and colonized America 11,000 years ago; but the first traces of agriculture, industry, population centres and control over nature date from barely the last 10,000 years. Some believe that the definitive leap towards culture was achieved through the acquisition of a creative language capable of expressing ideas and sentiments more advanced than the  simple communication of Homo erectus.The First Artists  Cave paintings, like those of the caves of Al...
Read more

FIRST HUMANS

-
Image
        The Australopithecus were the first humanlike creatures who could walk in an upright posture with their hands free, as indicated by the fossils found in Tanzania and Ethiopia. It is believed that climatic changes, nutritional adaptations and energy storage for movement contributed to bipedalism. In any case, their short legs and long arms are seen as indications that they were only occasional walkers. Their cranium was very different from ours, and their brain was the size of a chimpanzee's.         There is no proof that they used stone tools. Perhaps they made simple tools with sticks, but they lacked the intelligence to make more sophisticated utensils. Adaptation to the Environment         The climatic changes that occurred during the Miocene probably transformed the tropical rainforest into savannah. Various species of hominins left their habitats in the trees and went down to the grasslands in search of food....
Read more