Humans nearly wiped out 70,000 years ago, study says
2008 04 26
Human beings may have had a brush with extinction 70,000 years ago, an extensive genetic study suggests.
Was there a "mitochondrial Eve" who lived in Africa 200,000 years ago?
The human population at that time was reduced to small isolated groups in Africa, apparently because of drought, according to an analysis released Thursday.
The report notes that a separate study by researchers at Stanford University estimated that the number of early humans may have shrunk as low as 2,000 before numbers began to expand again in the early Stone Age.
"This study illustrates the extraordinary power of genetics to reveal insights into some of the key events in our species' history," said Spencer Wells, National Geographic Society explorer in residence.
"Tiny bands of early humans, forced apart by harsh environmental conditions, coming back from the brink to reunite and populate the world. Truly an epic drama, written in our DNA."
Wells is director of the Genographic Project, launched in 2005 to study anthropology using genetics. The report was published in the American Journal of Human Genetics.
Studies using mitochondrial DNA, which is passed down through mothers, have traced modern humans to a single "mitochondrial Eve," who lived in Africa about 200,000 years ago.
The migrations of humans out of Africa to populate the rest of the world appear to have begun about 60,000 years ago, but little has been known about humans between Eve and that dispersal.
The new study looks at the mitochondrial DNA of the Khoi and San people in South Africa, who appear to have diverged from other people between 90,000 and 150,000 years ago.
The researchers led by Doron Behar of Rambam Medical Center in Haifa, Israel, and Saharon Rosset of IBM T.J. Watson Research Center in Yorktown Heights, New York, and Tel Aviv University concluded that humans separated into small populations before the Stone Age, when they came back together and began to increase in numbers and spread to other areas.
Eastern Africa experienced a series of severe droughts between 135,000 and 90,000 years ago, and researchers said this climatological shift may have contributed to the population changes, dividing into small, isolated groups that developed independently.
Paleontologist Meave Leakey, a Genographic adviser, asked, "Who would have thought that as recently as 70,000 years ago, extremes of climate had reduced our population to such small numbers that we were on the very edge of extinction?"
Today, more than 6.6 billion people inhabit the globe, according to the U.S. Census Bureau.
The research was funded by the National Geographic Society, IBM, the Waitt Family Foundation, the Seaver Family Foundation, Family Tree DNA and Arizona Research Labs.
Article from: http://edition.cnn.com/2008/TECH/04/24/close.call.ap/index.html
Don't miss our radio programs with Lloyd Pye to get more information about the 'mitochondrial Eve'.
Latest Program: Lloyd Pye - The Annunaki & Genetic Engineering from July 3, 2008
Also tune into our program from August 9, 2007: Lloyd Pye - Human Origins, Intervention Theory & Genetic Experimentation
Ed Comment: For more information about another global mapping of the human genome, take a look at The Genographic Project video. Of course for a project like this, National Geographics choose to work with IBM, considering their history on the subject.
World’s oldest ritual discovered. Worshipped the python 70,000 years ago
'Darth Venter' (J. Craig Venter) & The Archon Genomics X Prize
Researchers may remake Neanderthal DNA
The Annunaki and the Myth of a 12th Planet
More articles on DeoxyriboNucleic Acid (DNA)
Latest News from our Front Page
The War Against Whites Is Massively Incentivized
2014 08 28
The war on Whites is getting increasingly obvious, to the point that a very mainstream source, Congressman Mo Brooks, stated it and then refused to back down. This war is being carried on with a number of very potent weapons.
At TOO we have stressed the moral onslaught which has inculcated guilt among legions of Whites for actions that have occurred ...
Study Offers Clues to Arctic Mystery: Paleo-Eskimos’ Abrupt Extinction
2014 08 28
Seven hundred years ago, the Dorset people disappeared from the Arctic. The last of the Paleo-Eskimos, the Dorset culture had dominated eastern Canada and Greenland for centuries, hunting seal and walrus through holes in the ice and practicing shamanistic rituals with ornate carvings and masks.
Then, they promptly ceased to exist. Modern archaeologists have scoured troves of Arctic artifacts, searching for ...
Lois Lerner’s IRS Blackberry Destroyed After Federal Probe
2014 08 28
The IRS destroyed former Lois Lerner’s BlackBerry after Congress started probing whether the IRS was targeting conservative groups. Lerner was director of the Exempt Organizations Division of the IRS. A sworn declaration of Thomas Kane, a senior IRS lawyer, reveals that in June 2012, the IT department of the IRS wiped any sensitive or proprietary information from the BlackBerry in ...
White Marine Beaten by Black Mob in Michael Brown ‘Revenge’ Attack
2014 08 28
Police refuse to treat incident as a hate crime
A white Marine was left in an induced coma after a group of black men brutally beat him as part of a revenge attack in response to the killing of 18-year-old Michael Brown in Ferguson, Missouri.
The incident began at West Point Waffle House in Mississippi on Saturday morning at around 1am. With ...
Study: Exposure to Endocrine disrupting Chemicals Can Affect Future Generations
2014 08 28
Scientists have known that toxic effects of substances known as endocrine disrupting chemicals (EDCs), found in both natural and human-made materials, can pass from one generation to the next. New research shows that females with an ancestral exposure to EDC may show especially adverse reactions to stress.
According to a new study by researchers from The University of Texas at Austin ...
|More News » |