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The true measure of compatibility is not the years spent together but how good you are for each other.
Indiana Jones Crystal Skull Lawsuit Raises Questions of Hoax
READ MORE - Indiana Jones Crystal Skull Lawsuit Raises Questions of Hoax
Stonehenge skeleton came from Mediterranean
The teen — dubbed "The Boy with the Amber Necklace" because he was unearthed with a cluster of amber beads around his neck — is one of several sets of foreign remains found around the ancient ring of imposing stones, whose exact purpose remains unknown.
The British Geological Survey's Jane Evans said that the find, radiocarbon dated to 1,550 B.C., "highlights the diversity of people who came to Stonehenge from across Europe," a statement backed by Bournemouth University's Timothy Darvill, a Stonehenge scholar uninvolved with the discovery.
"The find adds considerable weight to the idea that people traveled long distances to visit Stonehenge, which must therefore have had a big reputation as a cult center," Darvill said in an e-mail Wednesday. "Long distance travel was certainly more common at this time than we generally think."
The skeleton, thought to be that of a 14- or 15-year-old, was unearthed about two miles (3 kilometers) southeast of Stonehenge, in southern England.
Clues to the adolescent's foreign origins could be found in the necklace, which isn't a recognized British type. But he was traced to the area around the Mediterranean Sea by a technique known as isotope analysis, which in this case measured the ratio of strontium and oxygen isotopes in his tooth enamel.
Different regions have different mixes of elements in their drinking water, for example, and some of those are absorbed into a person's tooth enamel as he or she grows up. Analysis of the isotopes of oxygen and strontium carried in the enamel can give scientists a good but rather general idea of where a person was raised.
The teen, whose necklace suggests he came from a rich family, is one of several long-distance travelers found near Stonehenge. The "Amesbury Archer," so-called because of the stone arrowheads he was found with, was buried three miles (5 kilometers) from Stonehenge but is thought to have come from the Alpine foothills of central Europe. The "Boscombe Bowmen," also found nearby, are thought to have come from Wales or possibly Brittany.
It isn't clear precisely what drew these people to Stonehenge, a site which has existed in various forms for some 5,000 years. It clearly had an important ceremonial function, and the area around it is dotted with the remains of prehistoric monuments and tombs. Some say it was at the center of a sun-worshipping culture or that it served as a kind of astronomical calendar.
Others, like Darvill, also say it might have been an important healing site, drawing pilgrims from across Europe like a prehistoric version of Lourdes. ( Associated Press )
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Ancient volcano's devastating effects confirmed
The Toba eruption, which took place on the island of Sumatra in Indonesia about 73,000 years ago, released an estimated 192 cubic miles of ash into the atmosphere that blanketed the skies and blocked out sunlight for six years. In the aftermath, global temperatures dropped by as much as 28 degrees Fahrenheit and life on Earth plunged deeper into an ice age that lasted around 1,800 years.
In 1998, Stanley Ambrose, an anthropology professor at the University of Illinois, proposed in the Journal of Human Evolution that the effects of the Toba eruption and the Ice Age that followed could explain the apparent bottleneck in human populations that geneticists believe occurred between 50,000 and 100,000 years ago. The lack of genetic diversity among humans alive today suggests that during this time period humans came very close to becoming extinct.
To test his theory, Ambrose and his research team analyzed pollen from a marine core in the Bay of Bengal that had a layer of ash from the Toba eruption. The researchers also compared carbon isotope ratios in fossil soil taken from directly above and below the Toba ash in three locations in central India — some 3,000 miles from the volcano — to pinpoint the type of vegetation that existed at various locations and time periods.
Heavily forested regions leave carbon isotope fingerprints that are distinct from those of grasses or grassy woodlands.
The tests revealed a distinct change in the type of vegetation in India immediately after the Toba eruption. The researchers write in the journal Palaeogeography, Palaeoclimatology, Palaeoecology that their analysis indicates a shift to a "more open vegetation cover and reduced representation of ferns," which grow in humid conditions, all of which "would suggest significantly drier conditions in this region for at least 1,000 years after the Toba eruption."
The dryness probably also indicates a drop in temperature "because when you turn down the temperature you also turn down the rainfall," Ambrose said. "This is unambiguous evidence that Toba caused deforestation in the tropics for a long time."
He also concluded that the disaster may have forced the ancestors of modern humans to adopt new cooperative strategies for survival that eventually permitted them to replace Neanderthals and other archaic human species.
Although humans survived the event, researchers have detected increasing activity underneath a caldera at Yellowstone National Park, where some suspect another supervolcanic eruption will eventually take place. Though not expected to occur anytime soon, a Yellowstone eruption could coat half the United States in a layer of ash up to 3 feet (1 meter) deep. (Livescience.com )
READ MORE - Ancient volcano's devastating effects confirmed