Tag Archives: africa

The Genographic Project Confirms Humans Migrated Out of Africa through Arabia

*New analytical method approaches the unstudied 99% of the human genome*

WASHINGTON, D.C., – 02 Nov 2011: Evolutionary history shows that human populations likely originated in Africa, and the Genographic Project, the most extensive survey of human population genetic data to date, suggests where they went next. A study by the Project finds that modern humans migrated out of Africa via a southern route through Arabia, rather than a northern route by way of Egypt. These findings will be highlighted today at a conference at the National Geographic Society.

National Geographic and IBM’s Genographic Project scientific consortium have developed a new analytical method that traces the relationship between genetic sequences from patterns of recombination – the process by which molecules of DNA are broken up and recombine to form new pairs. Ninety-nine percent of the human genome goes through this shuffling process as DNA is being transmitted from one generation to the next. These genomic regions have been largely unexplored to understand the history of human migration. (more…)

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Africa’s Female Students Are Fighters and Survivors

The education of girls in developing countries is lagging by at least 30 years in comparison to the education of girls in developed countries. This is particularly true in sub-Saharan Africa, where only a minority of women get a university education. Why does this disparity still exist today?

Valèse Mapto Kengne obtained her diploma last spring from the Université de Montréal Faculty of Education where she devoted her thesis to answering that very question. “I wanted to know the truth behind the numbers. Why do some girls drop out? And contrarily, what drives the others to persevere? (more…)

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CT Study of Early Humans Reveals Evolutionary Relationships

CT scans of fossil skull fragments may help researchers settle a long-standing debate about the evolution of Africa’s Australopithecus, a key ancestor of modern humans that died out some 1.4 million years ago.

The study, to be published in the Proceedings of the National Academy of Sciences, explains how CT scans shed new light on a classic evolutionary puzzle by providing crucial information about the internal anatomy of the face. (more…)

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Ancient Humans Were Mixing it Up

*Anatomically modern humans interbred with more archaic hominin forms even before they migrated out of Africa, a UA-led team of researchers has found.*

It is now widely accepted that anatomically modern humans of the species Homo sapiens originated in Africa and eventually spread throughout the world. Ancient DNA recovered from fossil Neanderthal bones suggests they interbred with more archaic hominin forms once they had left their evolutionary cradle for the cooler climates of Eurasia, but whether they exchanged genetic material with other, now extinct archaic hominin varieties in Africa remained unclear.

In a paper published in the Proceedings of the National Academy of Sciences, or PNAS, a team led by Michael Hammer, an associate professor and research scientist with the UA’s Arizona Research Labs, provides evidence that anatomically modern humans were not so unique that they remained separate. (more…)

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Hyenas’ Ability to Count Helps Them Decide to Fight or Flee

EAST LANSING, Mich. — Being able to count helps spotted hyenas decide to fight or flee, according to research at Michigan State University.

When animals fight, the larger group tends to win. In the current issue of Animal Behaviour, Sarah Benson-Amram, an MSU graduate student studying zoology, showed that hyenas listen to the sound of intruders’ voices to determine who has the advantage. (more…)

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Eva Longoria Asks You to Vote for a Brighter Future

*Voting opens for Microsoft Imagine Cup 2011 People’s Choice Award.*

NEW YORK — June 20, 2011 — Today, activist, actor, author and philanthropist Eva Longoria asked people around the world to celebrate the amazing work of student humanitarians by voting for the Imagine Cup 2011 People’s Choice Award at https://www.imaginecup.com/pca. Imagine Cup by Microsoft Corp. is the world’s premier student technology competition, challenging students from around the globe to use technology to tackle social issues, such as helping with disaster recovery, improving access to clean water, and expanding rural education and health care.

In an online video, Longoria spoke about how students can make a difference by using technology to address the world’s toughest problems, and she encouraged people to vote for the People’s Choice Award, in which the public chooses their favorite projects from this year’s Imagine Cup. Voting begins today and runs through July 12. (more…)

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