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Clamshells reveal secrets of pre-Columbian society's decline

Moche Pottery
© Juan Carlos MartinsMoche pottery.

Dramatic changes in the ocean's environment could be one of the reasons why the Moche, an early pre-Columbian civilization in Peru, fell apart over 1000 years ago.

Upwelling of cold, deep water diminished because of changes in El Niño in the Pacific, and interrelated climate changes upset the life of the Moche (pronounced Mo-CHAY) in ways that undermined their social structure and life so badly that within a few generations, their society collapsed.

The history of that social catastrophe is told in clamshells, which reveal the local climate much like tree rings can.

The Moche Empire didn't suddenly collapse, said Fred Andrus, a geologist at the University of Alabama, in Tuscaloosa.

"The people adapted but did it in a way that was uncomfortable," he said. "They faced a series of challenges and dealt with them in ways that must have been difficult, and unpleasant."

The stable societies they built could not cope with the difficulties. Civil wars may have broken out, along with civil unrest. After a couple of centuries of upheaval new social organizations replaced the old, and the Moche simply became a different people, a culture known as the Chimu.

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Bones from time of Christ reveal a brutal history

Skull
© Ejvind Hertz/Skanderborg MuseumAmong the remains found at an archeological site in what is now Aiken, Denmark is a skull from early Roman Empire times.
In the days of ancient Rome, it was never a good idea to send amateurs to pacify the Germanic tribes. The Emperor Augustus found this out in A.D. 9, when his handpicked crony, Varus, blundered into a series of ambushes in the Teutoburg Forest and lost about 20,000 men in three days.

Several years later, another Roman army stopped at that battlefield, a bit south of the modern German city of Bremen, to clean up the scene. According to the historian Tacitus, they found "bleaching bones, scattered or in little heaps," while "hard by lay splintered spears and limbs of horses." Human skulls "were nailed prominently on the tree-trunks." There were "gibbets and torture pits for the prisoners," and "in the neighboring groves stood the savage altars at which they [the Germanic tribes] had slaughtered the tribunes and chief centurions." Varus had fallen on his sword after the battle, either out of shame or because he was terrified. It was impossible to know which.

Scattered archaeological evidence has long suggested that the warriors of ancient Germania were not kind-hearted in victory. But new evidence suggests just how grisly things were at about the time of Christ, when an aggressive and well-organized young Roman empire was trying - ultimately, unsuccessfully - to subdue the equally aggressive inhabitants of Germania.

A Danish team, working in a bog about 325 miles south of the site of the Roman massacre, is analyzing the recently excavated remains of 40 men, part of a larger contingent of as many as 200 soldiers, whose bodies were apparently hacked to bits and thrown into the shallows of Lake Mosso after a battle that took place between German rivals, probably a few years before the Varus massacre. The Alken bog, lying today beneath a lakeside meadow, conceals the largest concentration of apparent war dead ever found from that era. These findings, added to artifacts from other sites and the writings of the ancient Romans, are supplying insights into a warlord culture of fiercely egalitarian German tribes that fought constantly, routinely slaughtered their enemies and offered their bodies - and their weapons - to their gods.

Sherlock

Trove of Neanderthal bones found in Greek cave

A trove of Neanderthal fossils including bones of children and adults, discovered in a cave in Greece hints the area may have been a key crossroad for ancient humans, researchers say. The timing of the fossils suggests Neanderthals and humans may have at least had the opportunity to interact, or cross paths, there, the researchers added.

Neanderthals are the closest extinct relatives of modern humans, apparently even occasionally interbreeding with our ancestors. Neanderthals entered Europe before modern humans did, and may have lasted there until about 35,000 years ago, although recent findings have called this date into question.
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© Katerina Harvati et al.Map of Greece (left) showing the approximate position of Kalamakia cave (right, shown with excavated sediments) and other sites with human remains in the Mani peninsula.

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Study shows Shakespeare as ruthless businessman

Shakespeare
A painting believed to date from around 1610 depicts Shakespeare in his mid-forties. Sonnets by Shakespeare, Milton and other great authors have been branded “products of white western culture” and sideline by the University of Sanford. PHOTO BY OLI SCARFF / GETTY IMAGES
London - Hoarder, moneylender, tax dodger - it's not how we usually think of William Shakespeare.

But we should, according to a group of academics who say the Bard was a ruthless businessman who grew wealthy dealing in grain during a time of famine.

Researchers from Aberystwyth University in Wales argue that we can't fully understand Shakespeare unless we study his often-overlooked business savvy.

"Shakespeare the grain-hoarder has been redacted from history so that Shakespeare the creative genius could be born," the researchers say in a paper due to be delivered at the Hay literary festival in Wales in May.

Jayne Archer, a lecturer in medieval and Renaissance literature at Aberystwyth, said that oversight is the product of "a willful ignorance on behalf of critics and scholars who I think - perhaps through snobbery - cannot countenance the idea of a creative genius also being motivated by self-interest."

Archer and her colleagues Howard Thomas and Richard Marggraf Turley combed through historical archives to uncover details of the playwright's parallel life as a grain merchant and property owner in the town of Stratford-upon-Avon whose practices sometimes brought him into conflict with the law.

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Pluto's gate uncovered in Turkey

Plutonium
© Francesco D'AndriaA digital illustration shows the ancient Plutonium, celebrated as the portal to the underworld in Greco-Roman mythology.
A "gate to hell" has emerged from ruins in southwestern Turkey, Italian archaeologists have announced.

Known as Pluto's Gate -- Ploutonion in Greek, Plutonium in Latin -- the cave was celebrated as the portal to the underworld in Greco-Roman mythology and tradition.

Historic sources located the site in the ancient Phrygian city of Hierapolis, now called Pamukkale, and described the opening as filled with lethal mephitic vapors.

"This space is full of a vapor so misty and dense that one can scarcely see the ground. Any animal that passes inside meets instant death," the Greek geographer Strabo (64/63 BC -- about 24 AD) wrote. "I threw in sparrows and they immediately breathed their last and fell," he added.

Announced this month at a conference on Italian archaeology in Istanbul, Turkey, the finding was made by a team led by Francesco D'Andria, professor of classic archaeology at the University of Salento.

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First love child of human, Neanderthal found?

Neanderthal
© Corbis
The skeletal remains of an individual living in northern Italy 40,000-30,000 years ago are believed to be that of a human/Neanderthal hybrid, according to a paper in PLoS ONE.

If further analysis proves the theory correct, the remains belonged to the first known such hybrid, providing direct evidence that humans and Neanderthals interbred. Prior genetic research determined the DNA of people with European and Asian ancestry is 1 to 4 percent Neanderthal.

The present study focuses on the individual's jaw, which was unearthed at a rock-shelter called Riparo di Mezzena in the Monti Lessini region of Italy. Both Neanderthals and modern humans inhabited Europe at the time.

"From the morphology of the lower jaw, the face of the Mezzena individual would have looked somehow intermediate between classic Neanderthals, who had a rather receding lower jaw (no chin), and the modern humans, who present a projecting lower jaw with a strongly developed chin," co-author Silvana Condemi, an anthropologist, told Discovery News.

Condemi is the CNRS research director at the University of Ai-Marseille. She and her colleagues studied the remains via DNA analysis and 3D imaging. They then compared those results with the same features from Homo sapiens.

The genetic analysis shows that the individual's mitochondrial DNA is Neanderthal. Since this DNA is transmitted from a mother to her child, the researchers conclude that it was a "female Neanderthal who mated with male Homo sapiens."

Eye 1

Undark and the Radium Girls

undark clock
© n/a
In 1922, a bank teller named Grace Fryer became concerned when her teeth began to loosen and fall out for no discernible reason. Her troubles were compounded when her jaw became swollen and inflamed, so she sought the assistance of a doctor in diagnosing the inexplicable symptoms. Using a primitive X-ray machine, the physician discovered serious bone decay, the likes of which he had never seen. Her jawbone was honeycombed with small holes, in a random pattern reminiscent of moth-eaten fabric.

As a series of doctors attempted to solve Grace's mysterious ailment, similar cases began to appear throughout her hometown of New Jersey. One dentist in particular took notice of the unusually high number of deteriorated jawbones among local women, and it took very little investigation to discover a common thread; all of the women had been employed by the same watch-painting factory at one time or another.

In 1902, twenty years prior to Grace's mysterious ailment, inventor William J. Hammer left Paris with a curious souvenir. The famous scientists Pierre and Marie Curie had provided him with some samples of their radium salt crystals. Radioactivity was somewhat new to science, so its properties and dangers were not well understood; but the radium's slight blue-green glow and natural warmth indicated that it was clearly a fascinating material. Hammer went on to combine his radium salt with glue and a compound called zinc sulfide which glowed in the presence of radiation. The result was glow-in-the-dark paint.

Pharoah

Myths of mummy-making busted

CT Scan of Mummy
© Andrew WadeCT slices and 3D reconstruction showing the empty body cavity of the Royal Ontario Museum's ROM910.5.3 mummy.
Contrary to reports by famous Greek historian Herodotus, the ancient Egyptians probably didn't remove mummy guts using cedar oil enemas, new research on the reality of mummification suggests.

The ancient embalmers also didn't always leave the mummy's heart in place, the researchers added.

The findings, published in the February issue of HOMO - Journal of Comparative Human Biology, come from analyzing 150 mummies from the ancient world.

Mummy history

In the fifth century B.C., Herodotus, the "father of history," got an inside peek at the Egyptian mummification process. Embalming was a competitive business, and the tricks of the trade were closely guarded secrets, said study co-author Andrew Wade, an anthropologist at the University of Western Ontario.

Herodotus described multiple levels of embalming: The elites, he said, got a slit through the belly, through which organs were removed. For the lower class, mummies had organs eaten away with an enema of cedar oil, which was thought to be similar to turpentine, Herodotus reported. [See Images of Egyptian Mummification Process]

In addition, Herodotus claimed the brain was removed during embalming and other accounts suggested the heart was always left in place.

"A lot of his accounts sound more like tourist stories, so we're reticent to take everything he said at face value," Wade told LiveScience.

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Ancient stone ships reveal life and death in the Bronze Age

Stone Ship
© Joakim WehlinThis image shows the largest stone ship setting on Gotland.
People living in the Baltic Sea region during the Bronze Age built monuments to their sea-loving lifestyle, arranging large stones in the shape of life-size ships.

Archaeologists think these 3,000-year-old stone ships were used as symbolic vessels to carry the dead into the afterlife, since bones and urns are often unearthed from the sites. But one researcher believes Scandinavia's stone ships were also useful to the living, as ritual gathering spaces and possibly even teaching tools.

"These could have been used for other rituals and activities related to maritime life, such as teaching of navigation and embark/disembark ceremonies," Joakim Wehlin, from the University of Gothenburg and Gotland University, told LiveScience in an email.

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'Out of Africa' story being rewritten again

Ancient Skull
© F. DemeterA new genetic analysis suggests that humans left Africa no earlier than 95,000 years ago, pushing the date of that migration back more than 100,000 years.
Our early human ancestors may have left Africa more recently than thought, between 62,000 and 95,000 years ago, suggests a new analysis of genetic material from fossil skeletons.

The new findings are in line with earlier estimates, but contradict a more recent study that put humans' first exodus from Africa least 200,000 years ago.

The new results "agree with what we know from archaeology," said study co-author Alissa Mittnik, a biologist at University of Tübingen, in Germany.

Hot debate

Exactly when the first humans emerged from Africa to colonize the world has been a topic of heated debate.

All of the estimates hinge on one number: the gene mutation rates. By knowing how often genes change, and then counting up the number of genetic differences between different species or groups of people, scientists can create a "molecular clock" to decipher how long ago they shared a common ancestor.

Early studies used genetic differences in mitochondrial DNA - genetic material inside the cells' energy-making structures that gets passed on from mother to child - between chimpanzees and humans.

But since that technique is based on the number of mutations divided by the time since the two shared a common ancestor, it requires an estimate of when the common ancestor of chimpanzees and humans lived.

Newer research estimated the mutation rate in modern human families based on DNA from the nucleus, which involved another way of getting at the common ancestor timing. That method suggested humans were racking up genetic mutations at half the rate - meaning to reach the genetic differences we see today humans would've had to leave Africa more than 200,000 years ago.