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Reading history through genetics

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1000pa (Dec. 5, 2012) — Computer scientists at Columbia's School of Engineering and Applied Science have published a study in the November 2012 issue of The American Journal of Human Genetics (AJHG) that demonstrates a new approach used to analyze genetic data to learn more about the history of populations. The authors are the first to develop a method that can describe in detail events in recent history, over the past 2,000 years. They demonstrate this method in two populations, the Ashkenazi Jews and the Masai people of Kenya, who represent two kinds of histories and relationships with neighboring populations: one that remained isolated from surrounding groups, and one that grew from frequent cross-migration across nearby...

Africa's Homo sapiens were the first techies

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These are engraved ochres from the Still Bay M1 phase at Blombos Cave (modified after Henshilwood et al. 2009). This shows; a) Two groups of incisions, one on the center and one close to the edge. In the center two joining lines form a ‘Y’ that is crossed by a few perpendicular parallel lines. Three incisions cross these lines; b) Two lines that cross perpendicularly on the top right margin. Converging lines produced with a single lithic point; c) this piece retains only a...

National Geographic unveils new phase of genographic project

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1000pa (Dec. 5, 2012) — The National Geographic Society has announced the next phase of its Genographic Project -- the multiyear global research initiative that uses DNA to map the history of human migration. Building on seven years of global data collection, Genographic shines new light on humanity's collective past, yielding tantalizing clues about humankind's journey across the planet over the past 60,000 years.

"Our first phase drew participation from more than 500,000...

Native Americans and Northern Europeans more closely related than previously thought

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According to Nick Patterson, "There is a genetic link between the paleolithic population of Europe and modern Native Americans. The evidence is that the population that crossed the Bering Strait from Siberia into the Americas more than 15,000 years ago was likely related to the ancient population of Europe." (Credit: © Robert Cocquyt / Fotolia)

1000pa (Nov. 30, 2012) — Using genetic analyses, scientists have discovered that Northern European populations --...

Most of the harmful mutations in people arose in the past 5,000 to 10,000 years

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1000pa (Nov. 28, 2012) — A study dating the age of more than 1 million single-letter variations in the human DNA code reveals that most of these mutations are of recent origin, evolutionarily speaking. These kinds of mutations change one nucleotide -- an A, C, T or G -- in the DNA sequence. Over 86 percent of the harmful protein-coding mutations of this type arose in humans just during the past 5,000 to 10,000 years.

Some of the remaining mutations of this nature may have no...

First Bird

First Bird
What was the earliest known bird?

Unexplained artifacts

unexplained artifacts
The 10 most amazing unexplained artifacts

Evolution

Timeline: Human Evolution

Biggest Dinosaurs

The 10 Biggest Dinosaurs

Fossils 

Fossil Formation: How Do Fossils Form?
 

Book review

Dinosaurs Encyclopedia

Book Review

Dinosaurs: The Most Complete, Up-to-Date Encyclopedia for Dinosaur Lovers of All Ages ... WRITTEN BY A PROFESSIONAL paleontologist specifically for young readers, this guide to the Dinosauria is packed...