Activist, Researcher and Genealogist, Antoinette Harrell joined us in conversation. Ms. Harrell discussed teaching others how to research their African American Genealogy; along with her other important work of over 20 years that has unearthed thousands of state and federal documents relating to peonage that resulted in the Antoinette Harrell Collection.
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Europeans are closer to Neanderthals than Africans are: Ancient DNA in humans is due to species interbreeding after man left AfricaBy Elliot Booker — 2 years ago
- Breeding with Neanderthals has long been known to have left its traces in the DNA of modern Europeans
- Now scientists in Edinburgh have confirmed that the genetic similarity between the two must have arisen after interbreeding in Europe and Asia
- They believe two per cent of neanderthal DNA which exists in people today came from the mating outside of Africa
Europeans may be closer to their Neanderthal cousins than previously thought, new research suggests.
Breeding with Neanderthals has long been known to have left its traces in the DNA of modern Europeans.
Scientists in Edinburgh have now confirmed that the genetic similarity between the two must have arisen after interbreeding in Europe and Asia, before our ancestors spread across the globe.
Scientists at Edinburgh University have shown that the genetic similarity between Neanderthals and non-African modern human populations must have arisen after interbreeding in Europe and Asia
Previous research speculated that modern Europeans and Asians are related to neanderthals because they originated from a similar sub-population in Africa.
Both groups evolved from a common ancestor in Africa before spreading to other parts of the world.
The two groups emerged at different times with neanderthals leaving the African continent more than 200,000 years before humans did.
Now scientists at the University of Edinburgh and Wageningen University found the species mated in Europe and Asia thousands of years ago.
Neanderthal groups (skull, pictured) are believed to have been small and relatively isolated, which meant a natural emotional focus on close internal relationships
The research involved dividing up the genetic code of each sub-species to calculate the statistical likelihood of distant or recent interbreeding.
They traced the biological ties that exist between humans and the ancient species which are believed to have died out around 30,000 years ago.
The research found that the two per cent of neanderthal DNA which exists in people today came from the mating outside of Africa.
As well as revealing details of the shared history of humans and neanderthals, their research could be used to reconstruct the history of any species, including rare or extinct ones.
Dr Konrad Lohse, one of the scientists from the University of Edinburgh, said: ‘Although there has been mounting evidence for genetic exchange between modern humans and Neanderthals in Eurasia from a number of recent genetic studies, it has been difficult to rule out ancestral structure in Africa. We hope our study settles this issue.’
Last week, scientists said that modern Europeans share a number of genes involved in the build-up of certain types of fat with Neanderthals.
The same genes were not seen in people from Asia and Africa, however.
It is thought that ancient genes might have helped Europeans adapt better to colder climates, giving them an evolutionary advantage.
This is the first time we have seen differences in lipid concentrations between populations,’ said evolutionary biologist Philipp Khaitovich the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany and the CAS-MPG Partner Institute for Computational Biology in Shanghai, China.
‘How our brains are built differently of lipids might be due to Neanderthal DNA.Post Views: 331
By Creator — 4 years ago
Philly.com is reporting that a Black filmmaker is suing the Community College of Philadelphia over alleged racism in hiring practices.
“Brarailty “Rel” Dowdell, an African American filmmaker, claims in a federal lawsuit filed last week that Community College of Philadelphia discriminated against him based on his race and sex by denying him a full-time teaching job as a member of the English department. Dowdell, who has worked for the college for 12 years as an adjunct faculty member, said he made it through initial interviews by the hiring committee and English department in 2005 and 2015.” Read more….Post Views: 301
Report: White D.C Residents Outliving Their Black Peers by At Least 9 Years, a Gap That’s Persisted for Over 15 YearsBy Elliot Booker — 3 years ago
July 2, 2016 | Posted by Tanasia Kenney
A recent study by Georgetown’s School of Nursing and Health Studies revealed stark disparities between the measures of health for D.C.’s white and African-American residents.
According to the report, the average Black man in D.C. has a life expectancy of 68.8 years, a whopping 15 years shorter than his white counterpart. Meanwhile, the average Black woman is expected to live 76.2 years, nine less than the average white woman.
The 16-page analysis, titled “The Health of the African-American Community in the District of Columbia: Disparities and Recommendations,” examined social determinants like tobacco use, access to care, education, and air and water quality. The study linked several racial differences in health to the “structural or institutionalized injustices in social, economic, political, and environmental systems.”
According to the Washington City Paper, authors of the study used data from the U.S. Census Bureau, National Institutes of Health, and other federal and local health agencies to compile their report.
While the Affordable Care Act has helped more D.C. residents gain access to quality healthcare, the NHS report found that African-Americans haven’t benefited as much as other racial groups. For instance, Black men are still the most likely group in D.C. to be homicide victims. The study also found that the majority of the city’s older residents are struggling to get basic needs like housing.
“Historically, we’ve placed more emphasis on the health care system as a means of addressing the problem and less emphasis on complex social factors,” NHS assistant professor and report author Christopher King said in a release. “We can have the best health care in the world, but if we don’t live in communities that make it easy to make healthy choices, we’re less likely to see an improvement in health.”
Other racial disparities included in the report include:
- African-American residents are six times more likely to die from diabetes-related complications.
- Black residents are twice as likely to die from coronary heart disease and have high blood pressure than their white counterparts.
- The rate of obesity for African-Americans is 43 percent, the highest in D.C.
- African-American residents are “more than two times more likely to report 15-30 days of poor mental health.”
- 2013 infant mortality rates: 9.9 per 1,000 among Black residents, compared to 1.7 per 1,000 among white residents.
- Black residents are 3.5 times more likely to live below the poverty line.
Despite the disparities and dismal measures of health, the report managed to deliver a few doses of good news, too. For example, over 90 percent of Black adults and children in D.C. are medically insured. Another “85 percent of Black residents receive routine medical checkups — the highest percentage of all racial and ethnic groups” in the district.
“As the city continues to experience rapid growth and economic progress, proactive efforts are needed to address policies, practices, and norms that perpetuate segregation and inequitable distribution of resources — disproportionately burdening African American residents,” the report reads.
As solutions, the authors suggest healthcare and hospital reforms, asserting that medical institutions apply “a racial equity lens in how care is delivered” and ensure “leadership at all levels is a reflection of the community served.”
The extensive report will be submitted to Mayor Muriel Bowser and the D.C. Commission on African-American Affairs, Washington City Paper reports.
A similar report released by the Centers for Disease Control in May found that the national life expectancy gap between Blacks and whites had actually decreased. The average Black person in America has a life expectancy of 75.6 years, 3.4 years less than the average white person. That’s the smallest gap on record thus far, Atlanta Black Star reports.
“Blacks are catching up,” University of Pennsylvania demographer Samuel Preston told The New York Times. “The gap is now the narrowest it has been since the beginning of the 20th century, and that’s really good news.”Post Views: 272