Stone Age Tomb Discovery
A 5,500-year-old tomb possibly belonging to a Stone Age chieftain has been unearthed at a megalithic monument in the shape of a ship called the Ale's Stenar (Ale's Stones). The tomb, in Sweden, was likely robbed of stones to build the Viking-era ship monument. We found traces, mostly imprints, of large boulders, said lead archaeologist Bengst Söderberg of the Swedish National Heritage Board. So my conviction is that some of the stones at least, they are standing on the ship setting. Perched on a seaside cliff in the village of Kåseberga stands the Ales Stenar, also called Ale's Stones, 59 massive boulders arranged in the 220-foot (67-meter)-long outline of a ship. Most researchers believe the 1,400-year-old ship structure is a burial monument built toward the end of Sweden's Iron Age. Local legend has it that the mythic King Ale lies beneath the site. The Ales Stenar megaliths, some of which weigh as much as 4,000 pounds (1,800 kilograms), have distinctive cut marks similar to ones found at Stone Age sites. So researchers wondered whether the stones were stolen from an even older monument, Söderberg told LiveScience. In 2006, archaeologists used magnetic sensors and radar to map the area's underground terrain and found a larger circular structure about 541 feet (165 m) in diameter, with a 65-foot by 25-foot rectangle at its heart. The team finally dug a small trench through the center of the circle and unearthed the imprints of giant boulders that had been removed long ago. Though the team didn't find a skeleton, the imprints suggested the site was a Neolithic Age burial chamber called a dolmen, several upright stones with a horizontal boulder on top in which a body would be placed.
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The Family Meteorite
The rock is nothing much to look at 33 pounds and oval shaped. If you didn't know its history, you probably wouldn't be surprised that Donna Lewis's family used it as a doorstop, later parking it in the front garden. It was even painted green for a time. As it turned out, this was no ordinary rock. According to Fox News, Donna and her husband George formally announced that the family rock picked out of a cow pasture in the 1930 is in fact a meteorite. Researchers from the University of Tennessee believe the ancient and very valuable rock came from a known meteorite strike that first turned up evidence in Tazewell, Tennessee, in 1853. According to Arizona State University's Center for Meteorite Studies, a meteorite is a solid body from outer space that has fallen to the Earth's surface. The Lewis meteorite is classified as a "find" by the center, since it was not observed falling to earth but rather was recognized after the fact by its distinct features. After confirming the rock's other worldly pedigree, Eastern Kentucky University purchased it, for eventual display in the school's new science building.
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Behavioral Disorder in Girls
The brains of teenage girls with behavioral disorders are different to those of their peers, U.K. searchers have found. The Journal of Child Psychology and Psychiatry study of 40 girls revealed differences in the structure of areas linked to empathy and emotions. Previous work has found similar results in boys. Experts suggest it may be possible to use scans to spot problems early, then offer social or psychological help. An estimated five in every 100 teenagers in the UK are classed as having a conduct disorder. It is a psychiatric condition which leads people to behave in aggressive and anti-social ways, and which can increase the risk of mental and physical health problems in adulthood. Rates have risen significantly among adolescent girls in recent years, while levels in males have remained about the same. The team found part of the brain called the amygdala was smaller in the brains of male and female teenagers with conduct disorder than in their peers. The amygdala is involved in picking up whether or not others feel afraid - and plays a role in people feeling fear themselves. Girls with conduct disorder also had less grey matter in an area of the brain called the insula which is linked to emotion and understanding your own emotions. However the same area was larger in boys with conduct disorder than healthy peers, and researchers are not yet sure why that is the case.The brains of those with the worst behavior were most different from the norm. Dr Graeme Fairchild, of the University of Cambridge who also worked on the study, said there were potential uses for the finding. In the US, people are already using brain scans to argue diminished responsibility. I think we're too early in our understanding to really do that, but it is happening. It would also be possible to use scans where a person is at high risk of offending in the future.
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Gun for Votes
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Rare Wolf Almost Extinct
Fewer than 500 of Africa's only wolf species, the Ethiopian wolf, are thought to survive. And now, 12-year study of Ethiopian wolves living in the Ethiopian highlands has found there is little gene flow between the small remaining populations. That places the wolves at greater risk of extinction from disease, or habitat degradation. In a study published in the journal Animal Conservation, Dada Gottelli of the Zoological Society of London and colleagues in Oxford, UK and Berlin, Germany, quantified the genetic diversity, population structure and patterns of gene flow among 72 wild-living Ethiopian wolves. The team sampled wolves living within six of the remaining seven remnant populations, as well as from one population at Mount Choke, that has since become extinct. They found that genetic diversity was relatively high for a species that has declined to fewer than 500 individuals. That may be because discrete populations of wolves survived in Africa after the last glaciation period, which ended 18,000 years ago, and a number of rare gene types became fixed and maintained in these separate groups. However, this isolation is now working against the wolves. Researchers studied gene types at 14 separate locations on the wolf genome. They found that there is now weak gene flow between the Ethiopian wolf groups. That could be because, like other canids such as grey wolves and red foxes, Ethiopian wolves prefer very specific habitats and are unlikely to travel long distances. That makes it unlikely that the wolves will join other groups, which would provide an opportunity to mix their genes. More worryingly, the researchers also found that sub-populations within each population are also isolated. The Ethiopian wolf separated from its wolf-like ancestor 100,000 years ago when it colonized the Ethiopian highlands. Today it is adapted to life above altitudes of 3,000m, where it preys almost exclusively on high-altitude rodents. But only six populations survive, with a further three having become extinct over the past century. Ethiopian wolves are particularly vulnerable to outbreaks of rabies, a fatal disease that has reduced some populations by up to 75% within a few months. Another major threat to their future comes from habitat loss and fragmentation, which may be accelerated by climate change.
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Testicle Enhancement