Showing posts with label anthropology. Show all posts
Showing posts with label anthropology. Show all posts

Saturday, September 20, 2008

Meet Wilma: The Face Of Neanderthal Woman Revealed For The First Time

From The Daily Mail Online:

Artists and scientists have created the first model of a Neanderthal based in part on ancient DNA evidence.

She has been put together using analysis of DNA from 43,000-year-old bones that had been cannibalised.

The model has been nicknamed Wilma after she was found to have red-hair like the Flintstones character.

The findings had suggested that at least some Neanderthals would have had red hair, pale skin, and possibly freckles.

Created for an October 2008 National Geographic magazine article, Wilma has a skeleton made from replicas of pelvis and skull bones from Neanderthal females.

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Saturday, September 6, 2008

How Did Life on Earth Get Started?


From U.S. News And World Report:

On an arid outcropping of basalt in northwestern Australia, some of the oldest rocks on Earth lie exposed to the fierce sun. Formed at the bottom of an ancient ocean, this volcanic material shelters what one scientist calls the "oldest robust evidence" of life. At a scientific meeting at Rockefeller University in May, Roger Buick of the University of Washington said that the 3.5 billion-year-old rocks hold traces of carbon that once made up living organisms.

Even before Buick's discovery, ample evidence indicated that life on Earth began while our 4.5 billion-year-old planet was very young. Simple organisms certainly flourished between 2 billion and 3 billion years ago, and claims of older evidence of life have periodically surfaced. But none have been universally embraced, and Buick's claim is so new that other scientists haven't fully reviewed it.

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The Incredible Journey Taken By Our Genes

(Click To Enlarge)

From The Guardian:

Project maps humanity's voyage out of Africa to new continents and domination of the world

Sixty thousand years ago, a small group of African men and women took to the Red Sea in tiny boats and crossed the Mandab Strait to Asia. Their journey - of less than 20 miles - marked the moment Homo sapiens left its home continent.

The motive for our ancestors' African exodus is not known, though scientists suspect food shortages, triggered by climate change, were involved. However, its impact cannot be overestimated. Two thousand generations later, descendants of these African emigres have settled our entire planet, wiped out all other hominids including the Neanderthals and have reached a population of 6.5 billion.

Now scientists are completing a massive study of DNA samples from a quarter of a million volunteers in different continents in order to create the most precise map yet of mankind's great diaspora. Last week, in Tallinn, Estonia, they outlined their most recent results. 'As the ultimate ancestor begat son, who begat son and so on, they picked up mutations in their DNA that we can now pinpoint by gene analysis,' said project leader Dr Spencer Wells. 'When we look at these markers' distributions we can see how our ancestors moved about.'

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