Humanity has become extinct 70,000 years ago, only 2000 people worldwide

Individual studies by researchers at Stanford University speculate that human beings have drastically declined to just 2000 people worldwide by 70,000 years ago, and it seems they have been annihilated.

What was going on 70,000 years ago? Details are as below.
Study says near extinction threatened people 70,000 years ago - Yahoo! News

According to this project to study anthropology by genetics, which started in 2005, according to the tracking of mitochondria, the current human beings are called "mitochondria · Eve" who lived in Africa about 200,000 years ago It is known that it is a descendant of a single mother, and human beings have begun to spread to the whole world from about 60,000 years ago. However, little has been known about what happened between this mitochondria Eve and the dispersion to the whole world, and it was enveloped in a mystery.

According to recent research, the evidence of mitochondria revealed that the people of Khoi and San of South Africa seemed to diverge from other people 90,000 years ago and 150,000 years ago. Apparently, after being separated into a small group of people prior to the Stone Age, the number has increased as they returned together, and it seems that they began spreading to other regions this time. In addition, severe droughts occurred in East Africa before 135,000 years and 90,000 years ago, and by severe climate change by 70,000 years ago mankind drastically declined to such a few as to be in danger of extinction, It seems that it was about 2000 people.

According to a survey by the US Census Bureau, there are now more than 6.6 billion human beings on Earth, but no one knows when and for what reason it will endanger extinction again.

in Note, Posted by darkhorse