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Category Archives: Transhuman News

DNA Shows Clovis People as Ancestors to Native Americans

Posted: February 12, 2014 at 6:43 pm

DNA from the remains of a toddler buried 12,600 years ago in southwestern Montana confirm that the prehistoric Clovis people were the ancestors of American Indians, researchers said.

About 80 percent of all present-day indigenous people in North and South America are direct descendants of the family of the child, a 1-year-old boy, according to a paper published today in the journal Nature. The other 20 percent are more closely related to the Clovis than any other people on earth.

Debate about the origin of Americas native people has persisted for decades. Some scientists suggested the Clovis people were a migration of Europeans who used similar-looking tools about 21,000 to 17,000 years ago. Todays finding shows this notion can no longer be treated as a credible alternative for Clovis (or Native American) origins, said Jennifer Raff, a research fellow in anthropology at the University of Texas at Austin, in an editorial published with the study.

The neat part is that it confirms so many hypotheses, including the Native American understanding of where they came from, Raff said.

While the study suggests the Clovis were the first native people to establish themselves in the Americas, they werent the first humans to set foot on the continents. The Clovis arose after people arrived in America by way of the Siberian land bridge in the last ice age, which started 25,000 years ago, though they didnt descend from Europeans, Asians, or Melanesians, the scientists said.

The boys mitochondrial DNA, inherited from his mother, belongs to one of the founder lineages that was carried by the first people who crossed from Siberia. Though the sequence is rare in present-day American Indians, it was common among the oldest inhabitants of the Americas.

Comparing his genome show he is most closely related to American Indian populations, and more related to Siberians than any other Eurasian.

This discovery basically confirms what the tribes have never doubted: weve been here since time immemorial, and the objects in the ground are from our ancestors, said Shane Doyle, a member of the Crow tribe, a historian at Montana State University and a study author.

The Clovis people, known for their distinctive spear points were first identified in 1932, near Clovis, New Mexico. The child whose genome was sequenced was buried with about 120 artifacts in Montana, a site discovered 46 years ago. He was covered in red ochre, probably as part of a funeral, and was buried with a number of spear points that predate him, suggesting they were ritual objects or heirlooms. Its not clear how he died, the researchers said.

The study is also unusual, in that it enlisted consultants to present-day Montana tribes. The researchers plan to rebury the boy where he was found in late spring or early summer. The scientists traveled to local tribes to tell them about their discoveries and consult with them about how best to continue their research, Doyle said.

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Oldest Burial Yields DNA Evidence of First Americans

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DNA harvested from the remains of an infant buried 13,000 years ago confirms that the earliest widespread culture in North America was descended from humans who crossed over to the New World from Asia, scientists say.

The research, detailed in this week's issue of the journal Nature, also suggests that many contemporary Native Americans are direct descendants of the so-called Clovis people, whose distinctive stone tools have been found scattered across North America and Mexico.

The origins and genetic legacy of the people who made Clovis tools have been topics of debate among scientists. While most archaeologists think that the Clovis people were descended from Asians, an alternative theory suggests that the Clovis ancestors emigrated from southwestern Europe during the Last Glacial Maximum more than 15,000 years ago.

The new findings strongly refute that idea, known as the Solutrean hypothesis, said study co-author Michael Waters, director of the Center for the Study of the First Americans at Texas A&M University. "This shows very clearly that the ancestry of the very first Americans can be traced back to Asia," Waters said.

David Anderson, an anthropologist at the University of Tennessee Knoxville, agreed. "There's been a standard model for a long time that modern Native Americans are descended from populations coming from East Asia a few thousand years before Clovis, and that's what this finding reinforces," said Anderson, who was not involved in the study.

Anthropologist Dennis Jenkins of the University of Oregon said the new study was a "really important and really well done piece of research" that opens the door for new kinds of genetic comparisons among ancient Native American remains.

"The importance of this cannot be overemphasized," said Jenkins, who also did not participate in the research.

"People have often asked me what's the relationship of the Paisley Caves"a site in Oregon where human feces and artifacts up to 13,200 years old have been found"to Clovis, and I've always said that would be really nice to know, but there hasn't been any Clovis DNA until now," he said.

Oldest Burial in North America

The skeleton of the Clovis childwhich experts determined belonged to a young boy about one to one-and-a-half years oldwas discovered in 1968 in the Anzick burial site in western Montana. Dozens of ochre-covered stone tools found at the site were consistent with Clovis technology, and radiocarbon dating revealed that the skeleton was approximately 12,600 years old.

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Bone DNA matched Daniel's mum

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Human bones found in isolated bushland on Queensland's Sunshine Coast almost certainly belonged to murdered schoolboy Daniel Morcombe, a court has heard.

However, the exact cause of the 13-year-old's death couldn't be determined, the trial of his accused killer Brett Peter Cowan was told on Wednesday.

Jurors heard of the massive bushland search in the Sunshine Coast hinterland that uncovered more than a dozen partial bones and a pair of boy's shoes in August and September 2011.

Forensic crime scene manager Inspector Arthur Van Panhuis said police divers, State Emergency Service (SES) volunteers, scientific experts and cadaver dogs were involved in the search of an old sand mine, a macadamia farm and bushland near a creek at the Glass House Mountains.

Inspector Van Panhuis said metal detectors, sieves and an excavator were also employed in the meticulous hunt, in which 500 cubic metres of sand was shifted.

'It was an extremely intensive search,' he told the Supreme Court in Brisbane.

A boy's shoe was found within four days and within a month police had recovered a second shoe and 17 partial bones belonging to a human aged in their early teens.

DNA from an upper arm and thigh was compared with DNA from Daniel's mother and brothers.

'It was an exact match,' microbiologist Dr Dadna Hartman told the court.

Forensic pathologist Dr Peter Ellis who conducted the autopsy agreed with crown prosecutor Glen Cash that it was impossible to determine the cause of death.

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Bone DNA matched Daniel's mother

Posted: at 6:43 pm

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Human bones found in isolated bushland on Queensland's Sunshine Coast almost certainly belonged to murdered schoolboy Daniel Morcombe, a court has heard.

However, the exact cause of the 13-year-old's death couldn't be determined, the trial of his accused killer Brett Peter Cowan was told on Wednesday.

Jurors heard of the massive bushland search in the Sunshine Coast hinterland that uncovered more than a dozen partial bones and a pair of boy's shoes in August and September 2011.

Forensic crime scene manager Inspector Arthur Van Panhuis said police divers, State Emergency Service (SES) volunteers, scientific experts and cadaver dogs were involved in the search of an old sand mine, a macadamia farm and bushland near a creek at the Glass House Mountains.

Inspector Van Panhuis said metal detectors, sieves and an excavator were also employed in the meticulous hunt, in which 500 cubic metres of sand was shifted.

'It was an extremely intensive search,' he told the Supreme Court in Brisbane.

A boy's shoe was found within four days and within a month police had recovered a second shoe and 17 partial bones belonging to a human aged in their early teens.

DNA from an upper arm and thigh was compared with DNA from Daniel's mother and brothers.

'It was an exact match,' microbiologist Dr Dadna Hartman told the court.

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Ancient genome stirs ethics debate

Posted: at 6:43 pm

Robert L. Walker

Humans from the Clovis culture used characteristic stone points (brown) and rod-shaped bone tools.

The remains of a young boy, ceremonially buried some 12,600years ago in Montana, have revealed the ancestry of one of the earliest populations in the Americas, known as the Clovis culture.

Published in this issue of Nature, the boys genome sequence shows that todays indigenous groups spanning North and South America are all descended from a single population that trekked across the Bering land bridge from Asia (M.Rasmussen et al. Nature 506, 225229; 2014). The analysis also points to an early split between the ancestors of the Clovis people and a second group, whose DNA lives on in populations in Canada and Greenland (see page162).

But the research underscores the ethical minefield of studying ancient Native American remains, and rekindles memories of a bruising legal fight over a different human skeleton in the 1990s.

To avoid such a controversy, Eske Willerslev, a palaeobiologist at the University of Copenhagen who led the latest study, attempted to involve Native American communities. And so he embarked on a tour of Montanas Indian reservations last year, talking to community members to explain his work and seek their support. I didnt want a situation where the first time they heard about this study was when its published, he says.

Source: Montana Office of Public Instruction

Construction workers discovered the Clovis burial site on a private ranch near the small town of Wilsall in May 1968 (see Ancient origins). About 100 stone and bone artefacts, as well as bone fragments from a male child aged under two, were subsequently recovered.

The boys bones were found to date to the end of the Clovis culture, which flourished in the central and western United States between about 13,000 and 12,600 years ago. Carved elk bones found with the boys remains were hundreds of years older, suggesting that they were heirlooms. The ranch, owned by Melvyn and Helen Anzick, is the only site yet discovered at which Clovis objects exist alongside human bones. Most of the artefacts now reside in a museum, but researchers returned the human remains to the Anzick family in the late 1990s.

At that time, the Anzicks daughter, Sarah, was conducting cancer and genome research at the National Institutes of Health in Bethesda, Maryland, and thought about sequencing genetic material from the bones. But she was wary of stoking a similar debate to the one surrounding Kennewick Man, a human skeleton found on the banks of the Columbia River in Kennewick, Washington, in July 1996. Its discovery sparked an eight-year legal battle between Native American tribes, who claimed that they were culturally connected to the individual, and researchers, who said that the roughly 9,000-year-old remains pre-dated the tribes.

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Genome Of King Richard III Will Create Contemporary Portrait Of 15th Century Monarch

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If the genome sequencing is a success, it will make Richard III the first historical figure to have his DNA mapped in this way, according to CNN. Little is known about the 15th-century monarchs appearance, aside from artists renditions of him that were done long after his death in 1485. The project could reveal intricate details about the face behind the legend, right down to the color of his eyes and hair.

"There are no contemporary portraits of Richard," Turi King, a geneticist at the University of Leicester who will lead the project, said in a statement. "All the portraits that exist postdate his death by about 40 to 50 years onwards. So it's going to be interesting to see what the genetic information provides in relation to what we know from the portraits."

As CNN noted, many portraits of Richard III were painted in an unflattering light. He was branded after his death as a Machiavellian villain whose ascension to power was marked by bloodshed, including the murder of his two little nephews. This image was fueled by pro-Tudor propaganda that sought to legitimize his successors right to the throne.

Mapping the kings genome will give us an idea of just how accurate the centuries-old portraits really were.

Geneticists have previously sequenced the genomes of several ancient people, including Otzi the iceman, whose 5,000-year-old remains were discovered in 1991 on the Alpine border between Italy and Austria. As The BBC notes, scientists also mapped the DNA of a 4,000-year-old Greenland Inuit, a 7,000-year-old Spanish hunter-gatherer and several Neanderthals.

Sequencing Richard IIIs genome will not only give us a unique insight into the past, but have a profound impact on the way we think about disease and heredity in our own genomic age, Dan OConnor, head of medical humanities at the Wellcome Trust, which is funding the project, said in a statement. By making this genome available to all, we will ensure that we can continue to learn about Richards past both personal and historic even once his remains have been interred.

Sequencing King Richard IIIs genome will cost about 100,000, or about $165,000 USD. Thats just a fraction of what it cost to sequence the DNA of the first human genome in the 1990s. That project took 13 years and came with a price tag of about $1 billion, according to Live Science.

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Genome Of 12,600-Year-Old Clovis Boy May Be Missing Link In Native American Ancestry [PHOTOS]

Posted: at 6:43 pm

While there are few answers concerning the remains of a 12,600-year-old toddler found in the American Rockies, analysis of the boys genome may shed light on how the first Americans came to the New World.

The remains of the 1-year-old boy underwent a full genome sequence, which revealed, as expected, that the first human settlers in North America came from Asia and not Europe. Not only that, these tribes are the direct ancestors of todays Native Americans. The findings, published in Nature, add weight to the longstanding theory that the first Americans came to the New World by walking over a land bridge across the Bering Strait from Siberia.

"It's crazy," Eske Willerslev of the University of Copenhagen in Denmark, who led the genomic analysis told New Scientist. "Finding someone who is directly ancestral to the entire population of a continent that just does not happen. I don't think it would ever happen in Europe, or in Siberia. There are very few places where this could happen."

The skeletal remains, called Anzick-1, were found in 1968 near a rock cliff in central Montana, in an area called Anzick after the family that owned the land. At the time, the 1-year-old boys remains were found buried with a cache of sharpened flints and a bone tool that had been passed down for 150 years. The skeleton and burial artifacts were covered with red ochre, a type of mineral used in prehistoric times as a pigment in burials.

Spear points found at the burial site. Texas A&M University

Scientists believe the boy belonged to the Clovis culture (named after stone tools found in New Mexico), the first widespread prehistoric people that appeared about 13,000 years ago. The latest findings that link the toddlers skeletal remains to this prehistoric people may help settle differences between some anthropologists and Native Americans that have argued the first people originated in Europe, casting into doubt their origin stories and artifacts on ancestral lands, Reuters reports.

We hope that this study leads to more cooperation between Native Americans and scientists. This is just one human genome. We need to know the genetic story of modern Native peoples and derive more genetic data from ancient remains to fully understand the origins and movements of the First Americans and their descendants, Michael Waters, director of the Center for the Study of First Americans at Texas A&M, said in a statement.

Willerslev and his colleagues extracted DNA from the boys bones to sequence his genome. They compared the results with DNA samples from 43 modern non-African populations, including 52 South American, Central American and Canadian tribes. The results showed the boy was most closely and equally related to modern tribes in Central and South America.

Willerslev says the results act as the missing link between the first Americans and todays tribes. The new findings have settled the long-standing debate about the origins of the Clovis," according to Willerslev. "We can say the Solutrean theory suggesting Clovis originated from people in Europe doesn't fit our results."

Experts remain divided on just how the first Americans arrived and how large of a group first settled in the New World.

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Genome Of 12,600-Year-Old Clovis Boy May Be Missing Link In Native American Ancestry [PHOTOS]

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Home Remedy for Eczema Itching – Video

Posted: at 6:42 pm


Home Remedy for Eczema Itching

By: Sooraj Mohan

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Home Remedy for Eczema Itching - Video

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Children With Eczema: How to Stop the Scratching

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It's easy to say, "Don't scratch." Getting your child with eczema to listen to you is another story. But a little creativity can help keep your kid's fingers away from the itchy rash.

"The trouble with scratching is that it can actually make the condition worse," says Lawrence Eichenfield, MD, chief of pediatric dermatology at Rady Children's Hospital in San Diego. "And, it can cause cuts in the skin that can become infected. So it's important for parents to learn ways to help their child stop scratching."

Follow these tips to help your child reduce the urge to scratch.

Keep your child's skin properly moisturized to help keep eczema flare-ups and itching at bay.

Thick ointments, such as petroleum jelly, contain more oil than lotions and are the most effective at locking in moisture.

Some children may not like the feel of thick ointments. "I suggest parents let their older child try several moisturizers and choose which kind to use," Eichenfield says. "Because the best moisturizer is the one that your child will use."

For the best itch relief, use moisturizers several times a day, especially after bathing or washing.

Some parents find that using wet wraps can help stop the itching.

The best time to apply wet wraps is right before bedtime. Follow these steps:

You can apply wet wraps on any part of your child's body that is especially itchy.

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Media Censorship in China

Posted: at 6:41 pm

Backgrounder Media Censorship in China Author: Beina Xu Updated: February 12, 2014

China's central government has cracked down on press freedom as the country expands its international influence, but in the Internet age, many of its citizens hunger for a free flow of information.

See more in China; Censorship and Freedom of Speech; Internet Policy

Mark Lagon and Ryan Kaminski examine the relationship between freedom of speech, Huntington's Clash of Civilizations, and the infamous Innocence of Muslims YouTube video.

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Arch Puddington presents Freedom House's "Freedom in the World 2013" report, followed by a discussion between Tamara Wittes and Larry Diamond. They discuss the text of the report, as well as the differences between democratic indicators within nations, regional trends, and the normative importance of the "Arab Spring."

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Arch Puddington presents Freedom House's "Freedom in the World 2013" report, followed by a discussion between Tamara Wittes and Larry Diamond. They discuss the text of the report, as well as the differences between democratic indicators within nations, regional trends, and the normative importance of the "Arab Spring."

See more in Human Rights; Censorship and Freedom of Speech; Global

The debate over freedom of expression in new Arab and Muslim democracies should be seen as part of a larger historical transition, says Duke University's Timur Kuran.

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