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The Younger Dryas is one of the most well-known examples of abrupt change. About 14,500 years ago, the Earth's climate began to shift from a cold glacial world to a warmer interglacial state. Partway through this transition, temperatures in the Northern Hemisphere suddenly returned to near-glacial conditions (Figure 6). This near-glacial period is called the Younger Dryas, named after a flower (Dryas octopetala) that grows in cold conditions and became common in Europe during this time. The end of the Younger Dryas, about 11,500 years ago, was particularly abrupt. In Greenland, temperatures rose 10° C (18° F) in a decade (Figure 6
Scientists say they have found the trigger of a sharp cooling 13,000 years ago that plunged Europe into a mini ice age.
New scientific findings suggest that a large comet may have exploded over North America 12,900 years ago, explaining riddles that scientists have wrestled with for decades, including an abrupt cooling of much of the planet and the extinction of large mammals.
The tradition of a Golden Age existing in the distant past, and of a fall from grace into barbarism due to catastrophes of apocalyptic proportions, is enshrined in the memories and ancient writings of many peoples. These notions are, however, conventionally regarded as pure invention. The existence of a surprising amount of factual evidence which suggests that these accounts are actually based on a series of events really experienced by humankind, is generally either ignored or treated with great caution by established scholarship, largely because attempts to explain how this Golden Age came to an end have hitherto been unconvincing or uncomfortably threatening to orthodox interpretations of history. The real history of humanity is, however, far more dramatic and interesting than the conventional version implies. When the Earth Nearly Died offers an exciting and challenging new interpretation of the information currently available to us.
Among the fundamental geophysical effects experienced by Earth were a massive fracturing of the crust, a realignment of Earth's axis, elevation of new mountains, and widespread rearrangement of land and sea. These changes were accompanied by an appalling global conflagration, a gigantic flood, and what has been described as 'collapsed sky' conditions. A bombardment by debris from the disintegrated satellite of the destroyed planet added to the worldwide chaos.
Much of Earth's animal and plant life was annihilated by these frightful events. Remains were often buried hundreds of feet below and within vast new deposits which smothered huge areas, both on land and under the sea. Elsewhere they lay piled in caves, choked rock fissures, or were massed into veritable hills. Some havens and refuges did exist, offering shelter to various faunal and floral species from flood or fire - then to have to endure the appalling conditions which followed. These included intense cold, occasioned by chronic atmospheric pollution which severely restricted the solar radiation reaching the Earth, loss of vital resources such as shelter, tools and sources of warmth and nourishment. The extent of the damage was so great that the immediate survivors found themselves literally catapulted into what was, in effect, a new world.
According to the supporters of the genetic bottleneck theory, between 50,000 and 100,000 years ago, human population suffered a severe population decrease—only 3,000 to 10,000 individuals survived—followed eventually by rapid population increase, innovation, progress and migration.
Originally posted by Lighterside
I'm a firm believer in "The Great Forgetting". I think that the scientific community in general don't give enough credit to our ancestors, and have the timeline of the evolution of civilization all screwed up.
I sit on the fence over ancient aliens, but I am almost certain the humans had technology and knowledge that in some regards surpass even what we know and have today.
One can only hope that one day we might find definitive evidence of our past, something that will tell the true story of humanity. We've been here a long long time, and it's pretty clear some catastrophe happened imo, that kind of reset everything, sending us... ahem "back to the stone age" so to speak.
Great post OP.
Our species, Homo sapiens, appears to have originated in Eastern Africa around 200,000 years ago and there is strong evidence small populations of H. sapiens were moving north out of Africa and pressing into the near East around 100,000 years ago. This has been called Out of Africa II. Until very recently there appeared to be a gap in this migration for we find the first evidence of Homo sapiens in what is now eastern Europe around 40 to 50,000 years ago and fuzzier dating for migrations eastward into Asia.
Originally posted by kdog1982
Originally posted by Lighterside
I'm a firm believer in "The Great Forgetting". I think that the scientific community in general don't give enough credit to our ancestors, and have the timeline of the evolution of civilization all screwed up.
I sit on the fence over ancient aliens, but I am almost certain the humans had technology and knowledge that in some regards surpass even what we know and have today.
One can only hope that one day we might find definitive evidence of our past, something that will tell the true story of humanity. We've been here a long long time, and it's pretty clear some catastrophe happened imo, that kind of reset everything, sending us... ahem "back to the stone age" so to speak.
Great post OP.
I am with you about ancient aliens.
I think,we as homo sapiens were well capable of understanding the world around us and how to manipulate it to our advantage.
After all,we have been around,wandering the globe far longer then previously thought.
Our species, Homo sapiens, appears to have originated in Eastern Africa around 200,000 years ago and there is strong evidence small populations of H. sapiens were moving north out of Africa and pressing into the near East around 100,000 years ago. This has been called Out of Africa II. Until very recently there appeared to be a gap in this migration for we find the first evidence of Homo sapiens in what is now eastern Europe around 40 to 50,000 years ago and fuzzier dating for migrations eastward into Asia.
www.becominghuman.org...
Then,something happened and we started building monuments and huge shelters to protect future generations.
All around 11,500 years ago.
On top of that,we were given warnings on what is to come.edit on 13-11-2011 by kdog1982 because: (no reason given)
Originally posted by kdog1982
Why is it every where I search,agriculture started approximately 10,000 years ago?
Was it because there was no earlier evidence?
Or maybe they had to resort to growing their own food out of necessity because of a previous global calamity wiped out all naturally abundant food sources.
Originally posted by 1PLA1
reply to post by kdog1982
It is difficult to grow food in an ice age.
The genetics of domesticated plants shows that they were domesticated more than once.
I don't know how they figure that, but if true, it indicates a set-back somewhere along the line.
Originally posted by 1PLA1
reply to post by kdog1982
It is difficult to grow food in an ice age.
The genetics of domesticated plants shows that they were domesticated more than once.
I don't know how they figure that, but if true, it indicates a set-back somewhere along the line.