Until 11,700 years ago our earth had been in the Pleistocene Epoch, incorporating an evolutionary surge that lead to Homo Habilis, who lived from about 2.1 to 1.5 million years ago(2). By the peak of this duration the global temperatures on earth dropped by about 5oC, plunging the entire planet into an ice age, creating vast glaciers miles deep that expanded across limitless amounts of land, locking hordes of water into impenetrable sheets of ice. However, this gave a few species on earth a fierce advantage, for the glaciers had taken so much water from the oceans that it managed to drive the sea level 450 feet below that of today's. This unbelievable event altered so much of the earth’s surface that it created masses known as land bridges,
…show more content…
Close to 2 million years ago it has been theorized that early humans were able to cross out of Africa and into Yemen, finally beginning their long journey towards entirely untouched climates and scenery, along with never before seen ecosystems and organisms. The second was that of the Bering land bridge, the only thing that connected the Eastern and Western hemispheres until the first boats capable of crossing our oceans. Due to the ridiculous amount of water stolen from our earth by the glaciers, during the Pleistocene crossing this bridge would’ve been possible twice, both being above water for thousands of years. Asian hunters would eventually use this bridge to cross through Siberia into Alaska, establishing all homes of Native Americans who in turn, would travel downwards into South America; meaning that all pre-european people living in the Eastern Hemisphere were Eastern Asians derived from …show more content…
With 15 - 20 different human species anyone of them could’ve made their way up Africa and into Asia, but Homo Sapiens only began to leave Africa between 60 - 70 thousand years ago. At this time the remaining Ice Age brought a sudden cold snap that would’ve made life in Africa for our ancestors very difficult, and genetic evidence makes it clear that our species experienced a sharp decline in population, dropping to 10,000 or less and barely holding on by a thread(4). For the past years it was believed that Homo Ergaster; one of humans early relatives, was responsible for the first crossing in between the two continents, but with new modern technologies and genetic analysis a new theory has been gaining attention. An undiscovered species of australopithecus or more likely a species of Homo, crossed the land bridge approximately 2 million years ago before Homo Ergaster even evolved, and before Homo Erectus; a descendant of Homo Ergaster, was believed to have established primates in Asia. Passing through Northern Africa and it’s extensive arid environments would’ve taken technologies and mental capabilities seen nowhere else on the planet at the time, adding to the long list of amazing things primates are capable of achieving. This theory provides a missing link between Ergaster and Erectus, and explains the population found in Dmanisi.
Close to 2 million years ago it has been theorized that early humans were able to cross out of Africa and into Yemen, finally beginning their long journey towards entirely untouched climates and scenery, along with never before seen ecosystems and organisms. The second was that of the Bering land bridge, the only thing that connected the Eastern and Western hemispheres until the first boats capable of crossing our oceans. Due to the ridiculous amount of water stolen from our earth by the glaciers, during the Pleistocene crossing this bridge would’ve been possible twice, both being above water for thousands of years. Asian hunters would eventually use this bridge to cross through Siberia into Alaska, establishing all homes of Native Americans who in turn, would travel downwards into South America; meaning that all pre-european people living in the Eastern Hemisphere were Eastern Asians derived from …show more content…
With 15 - 20 different human species anyone of them could’ve made their way up Africa and into Asia, but Homo Sapiens only began to leave Africa between 60 - 70 thousand years ago. At this time the remaining Ice Age brought a sudden cold snap that would’ve made life in Africa for our ancestors very difficult, and genetic evidence makes it clear that our species experienced a sharp decline in population, dropping to 10,000 or less and barely holding on by a thread(4). For the past years it was believed that Homo Ergaster; one of humans early relatives, was responsible for the first crossing in between the two continents, but with new modern technologies and genetic analysis a new theory has been gaining attention. An undiscovered species of australopithecus or more likely a species of Homo, crossed the land bridge approximately 2 million years ago before Homo Ergaster even evolved, and before Homo Erectus; a descendant of Homo Ergaster, was believed to have established primates in Asia. Passing through Northern Africa and it’s extensive arid environments would’ve taken technologies and mental capabilities seen nowhere else on the planet at the time, adding to the long list of amazing things primates are capable of achieving. This theory provides a missing link between Ergaster and Erectus, and explains the population found in Dmanisi.