Tuesday, October 17, 2017

'Big, bad wolf' image flawed - scientists

Wolves are good at working together to get food rewards

New research casts doubt on the idea that dogs are naturally more tolerant and friendly than wolves.
In tests of cooperation skills, wolves outperformed their domesticated relatives.

Scientists say the findings challenge assumptions about how dogs were tamed from wolves and came to live alongside humans.
Previous evidence has suggested that the domestication process may have given dogs a more tolerant temperament.

"We still have very much this idea of the big, bad wolf and the cuddly pooch on your sofa," Dr Sarah Marshall-Pescini, who led the research, told BBC News.

"But, I think the simplest message is that the story is not quite as clear as that."

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Monday, October 16, 2017

Whisper it – Greek amphitheatre's legendary acoustics are a myth

Epidaurus. Ancient Greeks might have used all manner of devices to amplify sound, including placing hollow vessels at strategic locations.
Photograph: DEA / S. VANNINI/De Agostini/Getty Images

It has been held up as a stunning example of ancient Greek sound engineering, but researchers say the acoustics of the amphitheatre at Epidaurus are not as dazzling as they have been hailed.

Dating from the fourth century BC, and seating up to 14,000 spectators, the amphitheatre has long been admired for its sound quality, with claims that audiences are able to hear a pin drop, or a match being struck, at any seat in the house. Even the British archaeologist Sir Mortimer Wheeler raved about the amphitheatre, declaring in clipped tones in a 1958 broadcast: “Even a stage whisper could be picked up by the furthest spectator with the cheapest ticket.”

But new research suggests such assertions are little more than Greek myth.

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Monday, October 9, 2017

Prehistoric humans are likely to have formed mating networks to avoid inbreeding

Early humans seem to have recognized the dangers of inbreeding at least 34,000 years ago, and developed surprisingly sophisticated social and mating networks to avoid it, new research has found.


Detail of one of the burials from Sunghir, in Russia. The new study sequenced the genomes of individuals from the site and discovered that they were, at most, second cousins, indicating that they had developed sexual partnerships beyond their immediate social and family group.
Credit: By José-Manuel Benito Álvarez (Own work) [Public domain], via Wikimedia Commons

Early humans seem to have recognised the dangers of inbreeding at least 34,000 years ago, and developed surprisingly sophisticated social and mating networks to avoid it, new research has found.

The study, reported in the journal Science, examined genetic information from the remains of anatomically modern humans who lived during the Upper Palaeolithic, a period when modern humans from Africa first colonised western Eurasia. The results suggest that people deliberately sought partners beyond their immediate family, and that they were probably connected to a wider network of groups from within which mates were chosen, in order to avoid becoming inbred.

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Ax Linked to Ötzi the Iceman Found North of the Alps

Apart from a few scratches, the 2.6-inch-long (6.5 centimeters) blade is undamaged. 
Credit: Res Eichenberger

Archaeologists found a copper blade in Switzerland that's just like the ax Ötzi the famous "Iceman"was carrying when he died.

Like Ötzi's ax, this tool was made with copper that came from hundreds of miles away, in present-day Tuscany in central Italy. The discovery could shed light on Copper Age connections across Europe.

Bad fortune eventually made Ötzi the Iceman famous. About 5,300 years ago, he was shot with an arrow, struck in the head and left to die near a mountain pass high in the Alps. He was entombed in a glacier until 1991, when hikers near the Italian-Austrian border discovered his body.

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Friday, October 6, 2017

Mysterious Stone Tools Unearthed at Bronze-Age Site in Wales

The stone tools found by the CRAG team vary in size, from around 220 millimeters (8.5 inches) in length, down to about 50 millimeters (2 inches).
Credit: Ian Brooks/CRAG

Amateur archaeologists excavating a Bronze Age site in the United Kingdom have discovered a cache of unusual stone tools unlike any that have been found before.

The tools appear to have been deposited deliberately — perhaps ceremonially — in what would have been a stream around 4,500 years ago, according to the researchers.

Around 20 of the roughly triangular stone hand tools, of various sizes, were found at the excavation site in the Clwydian Range, a series of hills in Denbighshire in northeast Wales, by the Clwydian Range Archaeological Group (CRAG) during four weeks of excavations in July and August. [See More Photos of the Stone Tools at the Bronze-Age Site]

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Antikythera Shipwreck Yields More Amazing Finds

For the third consecutive year, the Greek Ephorate of Underwater Antiquities has conducted an underwater excavation at the site of the Antikythera shipwreck. Work was carried out between the 4th and the 20th of September, under particularly good weather conditions, as has been announced by the Ministry of Culture and Sports.


Finds from the excavation at the site of the Shipwreck of Antikythera 
[Credit: Ministry of Culture and Sports]

During research, excavations continued in the sea area, from where come the remains of skeletons from last year’s operation, as well as components from the ship itself such as: sections of lead tubing, counterweights and aggregates of iron objects. At the same time, a multitude of shards of amphorae and other vessels were recovered in this year’s excavation season.

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Antikythera shipwreck yields bronze arm – and hints at spectacular haul of statues

Arm points to existence of at least seven statues from Greek shipwreck, already the source of most extensive and exciting ancient cargo ever found


This bronze arm was discovered with a bespoke underwater metal detector, which has revealed the presence of other large metal objects nearby under the seabed. 
Photograph: Brett Seymour/EUA/ARGO 2017

Marine archaeologists have recovered a bronze arm from an ancient shipwreck off the Greek island of Antikythera, where the remains of at least seven more priceless statues from the classical world are believed to lie buried.

Divers found the right arm, encrusted and stained green, under half a metre of sediment on the boulder-strewn slope where the ship and its cargo now rest. The huge vessel, perhaps 50m from bow to stern, was sailing from Asia Minor to Rome in 1BC when it foundered near the tiny island between Crete and the Peloponnese.

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