Crucial discovery about human origins

Crucial discovery about human origins
 
 
One of the most important questions for scientists, at any given time might be about the origins of mankind or better say the Homo sapiens. We question many things because we are probably the most curious species on the face of the earth. Therefore, asking hundreds of questions about our own origins should be a regular human thing. Some of such questions include, how long have we been here? What did our early ancestors look like? And where is the best place to search for clues? Such questions are hard to answer and some may never even be answered for sure, but we are finding powerful clues in all sorts of places.
One of these places has shocked scientists for a variety of reason, like the one unearthed in Morocco last Wednesday. This discovery is extremely unique and especial because it is of fossils 100,000 years older than all the other remains known to have been found of our species. This discovery pushes the date back on Homo sapiens to about 300,000 years ago, which is of great importance for the anthropology community. In other word, before the Moroccan findings, anthropologists thought our species were 200,00 years old. How long this discovery dates back is only half of the story. What matters even more is the location. Before this discovery, a revolutionary perspective had become dominant in the world of anthropological science, which argued that sub-Saharan Africa was where the first species of Homo sapiens came to be. Something else is also very interesting about this discovery and that is the size and shape of the skulls found and how they match human skulls of today, with the exception that they show how the human brain has grown since then.
It is important to know that the last discovery dates back to 195,000 years ago, which conveys the message that our species is much older and has not originated from some place in East Africa or even sub-Saharan Africa, as it had previously been agreed on. Therefore, there is no doubt now that Homo sapiens are much older than we previously thought.
Homo sapiens have for a long time now been the only species of humans, while they shared earth with several other species of humans up until only 30,000 years ago, when Neanderthals went extinct. Some scientists argue that our species began to appear no more than 650,000 years ago, which was when our evolutionary lineage or branch split from that of Neanderthals.
Another interesting fact about us Homo sapiens, discovered by anthropologists working on this particular Moroccan site is that it shows how the shape of Homo sapiens face formed early in our history, while our brain shape and probably brain function developed later on. Back then our ancestors were hunter gatherers and lived in caves that have preserved so much of the evidence scientists use to measure how long ago such discoveries date back to. For example, scientists working on the Moroccan site used the stones heated by extensive fire use allowed scientists to calculate the age of discovered fossils.




آموزش آنلاین زبان انگلیسی EN45

آموزش آنلاین زبان انگلیسی EN45



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