The sea route along the north-western coast of America, followed by the first people who arrived in from Asia, according to a new… scientific research based on genetic analysis of the ancient environment.
The study challenges the up to now dominant theory that immigration was by land, through a strip of land that once, at the end of the ice age, linked it yet-but not anymore – Siberia with Alaska, and Canada. But many scientists are not prepared -not yet, at least – to accept the new theory.
The “script” that is today taught in US schools, says that, while it melted the glaciers, the first “Americans” they found an isthmus, a corridor of land of a length of about 1,500 km, which they walked in the direction of the South before around 13,000 years. But, according to a new study, this is not something that was actually feasible, because the passage that was really accessible to a lot later after the first settlers had settled in North America, and maybe even before than 15,000 years.
Therefore, the only alternative, according to the new theory, is to accept that those adventurous hunters-gatherers they were able to pass through the sea, the barrier of ice that still had not melted, using boats to follow a path close to the frozen coast.
The researchers, headed by the Danish professor of developmental genetics Έσκε ΒίλεÏσλεβ of the universities of Cambridge and Copenhagen, who made the relevant publication in the journal “Nature”, they analyzed samples of prehistoric DNA of plants and animals from sediments of canadian lakes, which once were part of the corridor land.
Scientists came to the conclusion that the overland crossing Siberia-Alaska, also known as “ΒεÏίγγεια Bridge Dry”, can be liberated from the ice, 14,000 to 15,000 years. But it started to become biologically viable -that appeared in this plants, fish and animals, which would allow the survival of transiting migrants – prior to approximately 12.600 years. So much later than the first migrations, which, according to the most recent data – pre-dating of 15,000 years and no pre-13.000 years old, as previously thought.
Thus, the researchers estimate that, as there was this passage by land (before the “swallow” the sea and formed the current “ΒεÏίγγειος Strait), the North immigrants used later and not for the first trips. As in the beginning, despite the withdrawal of the glaciers, I could find nothing to eat, since it would not have even seen plants, animals and fish in the long and cold corridor.
“The conclusion is that even if the natural corridor was open before 13,000 years ago, it was impossible to use before you spend many hundreds of years. This means that the first people who broke through in America, you need to have followed a different path,” said ΒίλεÏσλεβ. Who exactly were these travelers also remains a matter of scientific dispute.
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The study brings up-and-down in the History – How did the first people in America?
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