Licenciado

The origin of the Human being.

There are many theories about the origen of our specie, but now a days, I think the most important theory is the theory of the evolution, which has changed a littlesince the britanic scientific Charles Darwin postulated it, thanks to the new technologyes, wich have added new evidences and new questions too.
According this theory, the first steps of our speciehad been more than 3 millions of years ago, when the Australophitecus afarensis appared in the world. The importance of this primate was that it was able of walking with his two back legs, maybe oneadaptation to a climate change wich made the jungle retired in favour of the savannah, with long opened fields where our ancestors began to walk.
Maybe, the next step was doing with the Homo Habilis.This primate was in the family of the hominids, our family. This animal which lived almost 2 millons of years ago, with his no more than 1´5 metres high, was the first into use basic stone tools. But1´8 millions of years ago, another specie had appeared too, the Homo erectus. It´s not sure if erectus had evolutioned from habilis, but he knew to make stone tools. It seems that he was the firsthominid who left Africa to colonizing Asia.
If at this moment is very difficult to unite all the pieces of the puzzle, the things gets more complicated.
The first homo sapiens, who had very ancientcharacteristic (they didn´t seems completely like us), appeared almost a million of years ago in Africa.
Meanwhile, in Europe similar processes was taking place. Scientifics had dated the first hominids0,8 M.Y.A (Millon years ago), with populations of one hominid called Homo heidelbergensis, but a few years ago, there was an incredible discovering in some deposit called Atapuerca (Burgos, Spain). Thebones of one hominid (who was called Homo antecessor), appeared, and their bones were dated 1,2 MYA. In upper strata, there was bones of heidelbergensis, and up of tem, there was Neanderthal bones...