News / Africa

Modern Humans Traced to Southern African Bushmen

Present-day young Botswana Bushmen (file photo)
Present-day young Botswana Bushmen (file photo)
Jessica Berman

A new study traces the origin of modern humans to the primitive Bushmen tribes of southern Africa.  The finding upends a widely-held scientific belief that modern humans originated in east Africa.  

The largest-ever genetic analysis of a remote tribe concludes that the Bushmen of southern Africa are the ancestral source of modern humans.

The study by researchers at Stanford University in California was led by evolutionary geneticist Marcus Feldman. He notes that migrations out of eastern Africa some 60 to 70,000 years ago led to the seeding of modern humans across Asia, Europe and the Americas.

"Who were the ancestors of those Africans?  And I think we’ve proved with the data that the founding people in Africa were these click-speaking Bushmen from the southern part of Africa," said Feldman.

The Bushmen, whose unique spoken language includes a variety of tongue clicks, today number between 50,000 and 100,000 people, most of who live on the flat, dry and scrubby edge of the Kalahari Desert, on the fringes of human society.

Stanford researchers collected saliva specimens from 95 members of the Hadza and Sandawe tribes of Tanzania and the Khomani Bushmen of southern Africa.   From these, scientists obtained 650,000 DNA variations.

The genetic variations, called single nucleotide polymorphisms, or SNPS, were compared with the DNA of tribal people in Kenya and Tanzania, as well as a group of individuals from Tuscany, Italy.

Scientists found the greatest genetic variation in the Bushmen, according to Feldman, who says as populations emerge, they become less genetically diverse.

Feldman says the finding suggests that the Bushmen are the source of all Homo sapiens, or early humans, dating back some 200,000 years.  That includes those African tribes that migrated out of Africa from Sudan and the East African Highlands of Ethiopia to the rest of the world.

"The statistical analysis that we’ve done suggests that these are the most ancient people on the planet and that the rest of Africa derives from that group," he said.

While their numbers have dwindled to near-extinction levels, Feldman says it’s possible the Bush tribes did not always live in the sub-Saharan desert.  Feldman says they might have been driven there by expansion of the more affluent or aggressive cattle-herding Bantu populations.

A new gene analysis of primitive southern Africa Bush tribes is published in the journal Proceedings of the National Academy of Sciences.  

You May Like

Yemen Brings US, Iran Closer to Naval Face-off

US sending two more ships to waters off coast of Yemen to take part in 'maritime security operations' More

Minorities Become Majority Across US

From 2000 to 2013, minorities became the majority in 78 counties in the United States. Here's where those demographic shifts are happening More

Japan's Maglev Train Breaks Own Speed Record

Seven-car 'magnetic levitation' train traveled at more than 600 kilometers per hour during test run Tuesday More

This forum has been closed.
Comments
     
There are no comments in this forum. Be first and add one

Featured Videos

Your JavaScript is turned off or you have an old version of Adobe's Flash Player. Get the latest Flash player.
New Brain Mapping Techniques Could Ease Chronic Paini
X
Shelley Schlender
April 20, 2015 7:03 PM
Pain has a purpose - it can stop you from touching a flame or from walking on a broken leg. As an injury heals, the pain goes away. Usually. But worldwide, one out of every five people suffers from pain that lasts for months and years, leading to lost jobs, depression, and rising despair when medical interventions fail or health experts hint that a pain sufferer is making it up. From Boulder, Colorado, Shelley Schlender reports that new methods for mapping pain in the brain are providing validation for chronic pain and might someday guide better treatment.
Video

Video New Brain Mapping Techniques Could Ease Chronic Pain

From Boulder, Colorado, Shelley Schlender reports that new methods for mapping pain in the brain are providing validation for chronic pain and might someday guide better treatment.
Video

Video Hope, Prayer Enter Fight Against S. Africa Xenophobia

South Africa has been swept by disturbing attacks on foreign nationals. Some blame the attacks on a legacy of colonialism, while others say the economy is to blame. Whatever the cause, ordinary South Africans - and South African residents from around the world - say they're praying for the siege of violence to end. Anita Powell reports from Johannesburg.
Video

Video Italy Rescues Migrants After Separate Deadly Capsize Incident

Italy continued its massive search and rescue operation in the Mediterranean Monday for the capsized boat off the coast of Libya that was carrying hundreds of migrants, while at the same time rescuing Syrian migrants from another vessel off the coast of Sicily. Thirteen children were among the 98 Syrian migrants whose boat originated from Turkey on the perilous journey to Europe.
Video

Video New Test Set to Be Game Changer in Eradicating Malaria

The World Health Organization estimates 3.4 billion people are at risk of malaria, with children under the age of five and pregnant women being the most vulnerable. As World Malaria Day approaches (April 25), mortality rates are falling, and a new test -- well into the last stage of trials -- is having positive results in Kenya. Lenny Ruvaga reports for VOA from Nairobi.
Video

Video Are Energy Needs Putting Thailand's Natural Beauty at Risk?

Thailand's appetite for more electricity has led to the construction of new dams along the Mekong River to the north and new coal plants near the country's famous beaches in the south. A proposed coal plant in a so-called "green zone" has touched off a debate. VOA's Steve Sandford reports.
Video

Video Overwhelmed by Migrants, Italy Mulls Military Action to Stabilize Libya

Thousands more migrants have arrived on the southern shores of Italy from North Africa in the past two days. Authorities say they expect the total number of arrivals this year to far exceed previous levels, and the government has said military action in Libya might be necessary to stem the flow. VOA's Henry Ridgwell reports.
Video

Video Putin Accuses Kyiv of ‘Cutting Off’ Eastern Ukraine

Russian President Vladimir Putin, in his annual televised call-in program, again denied there were any Russian troops fighting in Ukraine. He also said the West was trying to ‘contain’ Russia with sanctions. Henry Ridgwell reports on reactions to the president’s four-hour TV appearance.
Video

Video Eye Contact Secures Dog's Place in Human Heart

Dogs serve in the military, work with police and assist the disabled, and have been by our side for thousands of years serving as companions and loyal friends. We love them. They love us in return. VOA’s Rosanne Skirble reports on a new study that looks at the bio-chemical bond that cements that human-canine connection.
Video

Video Ukrainian Volunteers Search for Bodies of Missing Soldiers

As the cease-fire becomes more fragile in eastern Ukraine, a team of volunteer body collectors travels to the small village of Savur Mohyla in the what pro-Russian separatists call the Donetsk Peoples Republic - to retrieve bodies of fallen Ukrainian servicemen from rebel-held territories. Adam Bailes traveled with the team and has this report.
Video

Video Xenophobic Violence Sweeps South Africa

South Africa, long a haven for African immigrants, has been experiencing the worst xenophobic violence in years, with at least five people killed and hundreds displaced in recent weeks. From Johannesburg, VOA’s Anita Powell brings us this report.
Video

Video Apollo 13, NASA's 'Successful Failure,' Remembered

The Apollo 13 mission in 1970 was supposed to be NASA's third manned trip to the moon, but it became much more. On the flight's 45th anniversary, astronauts and flight directors gathered at Chicago's Adler Planetarium to talk about how the aborted mission changed manned spaceflight and continues to influence space exploration today. VOA’s Kane Farabaugh reports.
Video

Video Badly Burned Ukrainian Boy Bravely Fights Back

A 9-year-old Ukrainian boy has returned to his native country after intensive treatment in the United States for life-threatening burns. Volodia Bubela, burned in a house fire almost a year ago, battled back at a Boston hospital, impressing doctors with his bravery. Faith Lapidus narrates this report from VOA's Tetiana Kharchenko.
Video

Video US Maternity Leave Benefits Much Less Than Many Countries

It was almost 20 years ago that representatives of 189 countries met at a UN conference in Beijing and adopted a plan of action to achieve gender equality around the world. Now, two decades later, the University of California Los Angeles World Policy Analysis Center has issued a report examining what the Beijing Platform for Action has achieved. From Los Angeles, Elizabeth Lee has more.
Video

Video Endangered Hawaiian Birds Get Second Chance

Of the world's nearly 9,900 bird species, 13 percent are threatened with extinction, according to BirdLife International. Among them are two Hawaiian honeycreepers - tiny birds that live in the forest canopy, and, as the name implies, survive on nectar from tropical flowers. Scientists at the San Diego Zoo report they have managed to hatch half a dozen of their chicks in captivity, raising hopes that the birds will flutter back from the brink of extinction. VOA’s George Putic reports.
Video

Video Exhibit Brings Renaissance Master Out of the Shadows

The National Gallery of Art in Washington has raised the curtain on one of the most intriguing painters of the High Renaissance. Mostly ignored after his death in the early 1500s, Italian master Piero di Cosimo is now claiming his place alongside the best-known artists of the period. VOA’s Ardita Dunellari reports.

VOA Blogs