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Why did the Neanderthals die out? A major conference in London this week will reveal the results of five years' research on why Homo sapiens emerged triumphant in the survival battle of radioarbon humans New research has revealed that Neanderthals died out within a few thousand years of the appearance dadiocarbon Homo sapiens. On a planet that bristled with different types of human being, http://www.xgs.in/blog/dating-venezuelan-guys/dating-hurts.php Neanderthals and the Hobbit-like folk of Flores.
Our current solo status on Earth is therefore an why radiocarbon dating is wrong oddity — though it is rariocarbon clear when our species became Earth's only masters, nor is it clear why we survived when all other why radiocarbon dating is wrong of humanity died out. Did we kill off our competitors, or were the others just poorly adapted and unable to react to the extreme climatic fluctuations that then beset the planet?
These key issues are to be tackled this week at a major conference at the British Museum, in London. At the meeting scientists will reveal results from a five-year article source programme using modern dating techniques to answer these puzzles. In particular, researchers have focused on the Neanderthals. They once dominated Europe, but disappeared after modern humans emerged from our African homeland around 60, years ago. The question is: why? They may have hung on in pockets — including caves in Gibraltar — until 28, years ago, it was believed.
Results from the five-year research programme, Reset Response of humans to abrupt environmental transitionswill show that modern humans arrived much earlier than previously estimated and that Neanderthals expired earlier than we thought.
Careful dating of finds across Europe suggest Homo sapiens could have reached Europe 45, years ago. Five thousand years later, Neanderthals had largely disappeared.
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Radioactive carbon decays relatively quickly and after 40, years there will only be a tiny amount left in a sample to measure. The tiniest piece of contaminant can then ruin dating rasiocarbon. However, scientists have set out to get round these problems. At Oxford University, scientists led by Tom Higham have developed new methods to remove contamination and have been able to make much more precise radiocarbon dating for this period.
In addition, Reset researchers have used evidence of a devastating eruption of the Campi Flegrei volcano west of Naples 39, years ago. Recent studies have shown this eruption was much more destructive than previously recognised.
More than 60 cubic miles of ash were blasted into the atmosphere and covered a vast area of eastern Europe, North Africa and western Asia. This layer gives scientists a precise means of dating for this period and, combined with the new radiocarbon dating, shows there seem to be no Neanderthal sites anywhere in Europe 39, years ago, a date 10, years earlier than previous why radiocarbon dating is wrong.
It is a significant shift in our thinking about our nearest evolutionary cousins. Some researchers have even suggested that Campi Flegrei — the biggest volcanic eruption in Europe for more thanyears — would have had a catastrophic impact. Vast plumes of ash would have blotted out the sun for months, or possibly years, and caused temperatures to http://www.xgs.in/blog/dating-venezuelan-guys/hutcherson-dating.php. Sulphur dioxide, fluoride and chloride emissions would have generated intense falls of acid rain. Neanderthals may simply have shivered and choked to death.
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The Campi Flegrei eruption not only gives us a date for the Neanderthals' disappearance, it may provide us with the cause of their extinction, though Stringer sounds a note of caution. But I doubt it," he said. A few may still have been hanging around, of course, and Campi Flegrei may have delivered the coup de grace. But it would why radiocarbon dating is wrong wrong to think the eruption was the main cause of the Neanderthals' demise.
Given the speed at which they seem to have disappeared from the planet after modern humans spread out of Africa, it is likely that Homo sapiens played a critical role in their demise. That does not mean we chased them down and killed them — an unlikely scenario given their muscular physiques.
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However, we may have been more successful at competing for resources, as recent research has suggested. Eiluned Pearce and Robin Dunbar of Oxford University recently worked with Stringer and compared the skulls of 32 Homo sapiens why radiocarbon dating is wrong 13 Neanderthals, finding the latter had eye sockets that were significantly larger. These larger eyes were an adaptation to the long, dark nights and winters http://www.xgs.in/blog/dating-venezuelan-guys/dating-events-in-cornwall.php Europe, they concluded, and would have required much larger visual processing areas in Neanderthal skulls.
By contrast, modern humans, from sunny Africa, had no need for this adaptation and instead they evolved frontal lobes, which are associated with high-level processing. This point is stressed by Stringer.
He said: "Neanderthal brains were as big as modern humans' but the former had bigger bodies.]
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