World's oldest erotic 'graffiti' discovered on Greek island

Tourists admire the Aegean, which is home to the island of Astypalaia.AP Photo/Dimitri Messinis

Think phallic graffiti art exclusively belongs to the baseless present? Think again. An archaeologist has uncovered what the Guardian touts as the earliest erotic graffiti on the planet, found in Greece—and predating, in one case, even Athens' Acropolis.

Since 2011, Dr. Andreas Vlachopoulos has been directing fieldwork on the Aegean island of Astypalaia, and the professor may have given the students working with him a little more insight than he'd at first intended when he happened upon extremely explicit erotica chiseled into the limestone rocks that line the cape.

In one instance, dating back to 5th century BC, two gigantic penises are etched next to the name Dion; in another, dating to 6th century BC, one man boasted: "Nikasitimos was here mounting Timiona." "We know that in ancient Greece sexual desire between men was not a taboo," Vlachopoulos tells the Guardian.

"But this graffiti … is not just among the earliest ever discovered. By using the verb in the past continuous [tense], it clearly says that these two men were making love over a long period of time, emphasizing the sexual act in a way that is highly unusual in erotic artwork." One theory is that soldiers were once stationed at this outpost overlooking the bay; other carvings include that of ships, daggers, and wave-symbolizing spirals.

Either way Astypalaia, best known for what Archaeology International called "the largest ancient children’s cemetery in the world," with at least 2,700 infant burials identified in one place, can now add ancient porn among its claims to fame.

(Meanwhile, in Italy, art restorers have been accused of scrubbing away the erotic...)

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Cavemen Bones Yield Oldest Modern Human DNA

What may be the oldest fragments of the modern human genome found yet have now been revealed — DNA from the 7,000-year-old bones of two cavemen unearthed in Spain, researchers say.

These findings suggest the cavemen there were not the ancestors of the people found in the region today, investigators added.

Scientists have recently sequenced the genomes of our closest extinct relatives, the Neanderthals and the Denisovans. When it came to our lineage, the oldest modern human genomes recovered yet came from Ötzi the Iceman, a 5,300-year-old mummy found in the Alps in 1991. Researchers have salvaged DNA from even older human cells, but this comes from the mitochondria that generate energy for our bodies, and not from the nucleus where our chromosomes are housed. (Mitochondrial DNA is passed down only by mothers.)

Now researchers have rescued fragments of genomes from the remains of two cavemen unearthed in northern Spain.

"These are the oldest partial genomes from modern human prehistory," researcher Carles Lalueza-Fox, a paleogeneticist at the Spanish National Research Council, told LiveScience. [Image Gallery: Our Closest Human Ancestor]

The skeletons of two young adult males were discovered by chance in 2006 by cave explorers in a cavern high in the Cantabrian mountain range, whose main entrance is found at 4,920 feet (1,500 meters) altitude. Winters there are notably cold, which helped preserve the DNA in the bones.

These bones date back to the Mesolithic period, before agriculture spread to the Iberian Peninsula with Neolithic settlers from the Middle East. These cavemen were hunter-gatherers, judging by the ornament that one was found with of red-deer canines embroidered onto a cloth.

The scientists recovered 1.34 percent and 0.5 percent of the human genomes from the bones of these two cave men. Analyses revealed that current populations of the Iberian Peninsula, which includes Spain, Portugal and Andorra, are not genetically linked with these ancient hunter-gatherers. Instead, these cavemen were closer genetically to the current populations of northern Europe.

"There are many works that claim the Basques [of the Iberian Peninsula] could be descendants from Mesolithics that became isolated in the Basque country," Lalueza-Fox said. "We found the modern Basques are genetically not related to these two individuals."

The scientists also recovered the complete mitochondrial DNA of one of these cavemen. This revealed that European populations during the Mesolithic were very uniform genetically.

"Despite their geographical distance, individuals from the regions corresponding to the current England, Germany, Lithuania, Poland and Spain shared the same mitochondrial lineage," Lalueza-Fox said. "These hunters-gatherers shared nomadic habits and had a common origin."

The researchers now aim to complete the genomes of both cavemen. Such data could help "explore genes that have been modified with the arrival of the Neolithic in the European populations," Lalueza-Fox said.

The scientists detailed their findings online today (June 28) in the journal Current Biology.

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World's Oldest Meteorite Crater Found

A study of Greenland's rocks may have turned up something unexpected: the oldest and largest meteorite crater ever found on Earth.

Researchers think the crater was formed 3 billion years ago, making it the oldest ever found, said Danish researcher Adam Garde. The impact crater currently measures about 62 miles (100 kilometers) from one side to another. But before it eroded, it was likely more than 310 miles (500 km) wide, which would make it the biggest on Earth, Garde told OurAmazingPlanet.

The team has calculated it was caused by a meteorite 19 miles (30 km) wide, which, if it hit Earth today, would wipe out all higher life.

Mystery feature

In the 3 billion years since impact, the land has been eroded down to about 16 miles (25 km) below the original surface. But the effects of the intense shock wave and heat penetrated deep into the Earth, and remain visible today, said Garde, a researcher at the Geological Survey of Denmark and Greenland. [Meteor Mania: How Well Do You Know 'Shooting Stars'?]

Garde had been conducting research on Greenland's geology and noticed several strange features that didn't make sense. One day in September 2009, he came up with the extreme explanation of an impact from a meteorite. His team collected samples over the years and published the results in the July issue of the journal Earth and Planetary Science Letters. He's now "100 percent positive" it's a crater, for several reasons, he said.

For one, he found widespread crushed rocks in a circular shape that seemed to be caused by the shock waves of a massive impact. Second, there are deposits of a melted mineral called K-feldspar (or potassium-feldspar) that could have been liquefied only at extremely high heat, like that caused by an meteorite's crash-landing. There's also widespread evidence of weathering by hot water, which he thinks was caused by the ocean rushing into the crater after it struck the area. The area may have been covered by a shallow ocean at the time, but even if it wasn't, it doesn't matter, Garde said. "The crater from a meteorite that big would have caused the sea to rush in," he said.

Mining for minerals

John Spray, a meteorite expert at the University of New Brunswick, who wasn't involved in the research, said he thinks it's probably a meteor crater, but points out that it hasn't been proved, and may not be for some time. "It's very interesting and it's good science," he said. "But we don't really know how to recognize very old impact craters, because they are typically so highly modified."

That's because Earth is alive and constantly changing due processes such as erosion, precipitation and plate tectonics. At one time Earth likely had as many craters as the moon, which is essentially geologically dead. But these have mostly been wiped away, destroyed by erosion and the like.

Only around 180 impact craters have ever been discovered on Earth, and nearly one-third of them contain significant minerals deposits such as precious metals. The Canadian mining company, North American Nickel, is exploring the region where the potentially newfound crater is for nickel and other mineral deposits, company geologist John Roozendaal said. They are conducting airborne surveys and will soon do more mapping, small-scale sampling and drilling to see if they can find an area that could be economical to mine.

These impacts are of interest to mining companies not because of the large meteorites themselves — they typically vaporize — but because of the effect upon the Earth's surface. The impact heats rocks so much that metals can melt and then collect toward the bottom of the crater. Craters can also be important sources of oil and gas; the crushed, permeable rocks can act like a sponge, absorbing hydrocarbons.

Before this discovery, the oldest crater was thought to be the Vredefort crater in South Africa, estimated to be 2 billion years old. At 186 miles (300 km) wide, it's also the largest crater that remains visible. Scientists expect that there were many more craters formed around 3-4 billion years ago when Earth lacked a protective atmosphere.

Garde said the most interesting thing about the experience was finding an alternate explanation for something outside of his training. "I had a problem I couldn't solve in a region I knew very well," he said. "A meteor impact was the idea that made everything fall into place — It's not something I was looking for."

Reach Douglas Main at dmain@techmedianetwork.com. Follow him on Twitter @Douglas_Main. Follow OurAmazingPlanet on Twitter @OAPlanet. We're also on Facebook and Google+.

Copyright 2012 OurAmazingPlanet, a TechMediaNetwork company. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

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