UkQuickSex, UkQuickies, UK Sex & Adult dating & Sex Contacts
So suggests new research that tracked changes in two genes thought to help regulate brain growth, changes that appeared well after the rise of modern humansyears ago. That the defining feature of humans — our large brains — continued to evolve as recently as 5, years ago, and may be doing so today, promises to surprise the average person, if not biologists. Lahn and colleagues examined two genes, named microcephalin and ASPM, that are connected to brain size.
If those genes don't work, babies are born with severely small brains, called microcephaly. Using DNA samples from ethnically diverse populations, they identified a collection of variations in each gene that occurred with unusually high frequency.
In fact, the variations were so common they couldn't be accidental mutations but instead were probably due to natural selection, where genetic changes that are favorable to a species quickly gain a foothold and begin to spread, the researchers report. Lahn offers an analogy: Medieval monks would copy manuscripts and each copy would inevitably contain errors — accidental mutations.
Years later, a ruler declares one of those copies the definitive manuscript, and a rush is on to make many copies of that version — so whatever changes from the original are in this presumed important copy become widely disseminated. Scientists attempt to date genetic changes by tracing back to such spread, using a statistical model that assumes genes have a certain mutation rate over time.
For the microcephalin gene, the variation arose about 37, years ago, about the time period when art, music and tool-making were emerging, Lahn said.
For ASPM, the variation arose about 5, years ago, roughly correlating with the development of written language, spread of agriculture and development of cities, he said. Other scientists urge great caution in interpreting the research. That the genetic changes have anything to do with brain size or intelligence "is totally unproven and potentially dangerous territory to get into with such sketchy data," stressed Dr. Aside from not knowing what the gene variants actually do, no one knows how precise the model Lahn used to date them is, Collins added.
Lahn's own calculations acknowledge that the microcephalin variant could have arisen anywhere from 14, to 60, years ago, and that the uncertainty about the ASPM variant ranged from to 14, years ago. Those criticisms are particularly important, Collins said, because Lahn's testing did find geographic differences in populations harboring the gene variants today.
They were less common in sub-Saharan African populations, for example. That does not mean one population is smarter than another, Lahn and other scientists stressed, noting that numerous other genes are key to brain development. The work was funded by the Howard Hughes Medical Institute. The information contained in the AP News report may not be published, broadcast, rewritten or redistributed without the prior written authority of The Associated Press.
Language tree rooted in Turkey Evolutionary ideas give farmers credit for Indo-European tongues. The finding hints that farmers in what is now Turkey drove the language boom - and not later Siberian horsemen, as some linguists reckon. Russell Gray and Quentin Atkinson, of the University of Auckland in New Zealand use the rate at which words change to gauge the age of the tree's roots - just as biologists estimate a species' age from the rate of gene mutations.
The differences between words, or DNA sequences, are a measure of how closely languages, or species, are related. Gray and Atkinson analysed 87 languages from Irish to Afghan. Rather than compare entire dictionaries, they used a list of words that are found in all cultures, such as 'I', 'hunt' and 'sky'. Words are better understood than grammar as a guide to language history; the same sentence structure can arise independently in different tongues. The resulting tree matches many existing ideas about language development.
Independent escorts listings since at
Spanish and Portuguese come out as sisters, for example - both are cousins to German, and Hindi is a more distant relation to all three. All other Indo-European languages split off from Hittite, the oldest recorded member of the group, between 8, and 10, years ago, the pair calculates 1. Around this time, farming techniques began to spread out of Anatolia - now Turkey - across Europe and Asia, archaeological evidence shows.
The farmers themselves may have moved, or natives may have adopted words along with agricultural technology. The conclusion will be controversial, as there is no consensus on where Indo-European languages came from.
Some linguists believe that Kurgan horsemen carried them out of central Asia 6, years ago. It shows how ideas about language evolution can be tested, she says: There is lots of word-swapping within language groups.
English took 'skirt' from the Vikings, for example, but 'shirt' is original. Linguists must separate the shared from the swapped, as any error will affect later studies. The Kurgan might not be out of the picture entirely, says McMahon - they may have triggered a later wave of languages. Language-tree divergence times support the Anatolian theory of Indo-European origin. Nature,-doi: Earlier that morning I had set out on a pilgrimage to the Exalted Throne of Yahweh where Adam's god dwelt.
Within an hour the noise and chaos of Tabriz had been left far behind, as our four-wheel drive ascended out of the alpine valley of the Adji Chay onto the plateau of the Sahand massif, with imposing volcano at its heart. Now I found myself at the entrance to one of our world's most extraordinary places - the troglodyte village of Kandovan. Ambling down the cobbled street - only just wide enough to take a donkey and cart - I turned up a steep side alley, all the time stalked by a clutch of free-roaming chickens.
The alley soon morphed into a roughly sculpted flight of steps which twisted and turned between huge canine teeth of lava. Each was a home - a dwelling from a bygone age with rickety wooden door and tiny mullioned windows. In this Dysneyesque landscape of cave-dwellers, I almost expected Pinocchio to appear around the next bend.
Kandovan - 'The Honeycombe'. My long journey, starting in the research libraries of London University, had led me to the Mesopotamian flood plain and on up into the mountains of Kurdistan, finally to reach the place the Book of Genesis calls the Garden of Eden.
There is no straightforward way to explain how an Egyptologist, used to working in the dry heat of the north African deserts, should end up traversing the Zagros mountains of western Iran in search of the earthly paradise.
I had begun my studies in the Departments of Egyptology and Ancient History at University College, London, with a major interest in the complex chronology of Egyptian civilisation.
My PhD work to radically revise that chronology had inevitably drawn me into the world of biblical history - so closely bound up with the land of the pharaohs. Years of research had led me to the conclusion that many of the stories in the Old Testament were based on real historical events: But why was I now delving into the Book of Genesis - that most mythological and hoary of the biblical texts?
Surely it would have been better to leave well alone? But that is not my way. The simple fact is that ancient stories and legends have always fascinated me and the chance to uncover the historical reality behind the greatest legend of them all was just too tempting an opportunity to pass by. The 'Temptation Seal' on display in the British Museum. Back in I had been sent a short, privately published paper by amateur historian, Reginald Walkerwhich proposed a location for the Garden of Eden in north-western Iran.
The main thrust of Walker's argument was that the four rivers of Eden, described in Chapter Two of Genesis, were to be found in that region. All four had their sources the Bible refers to them as 'heads' around the two great salt lakes of Van and Urmia. Ever since the time of the Jewish historian Josephus, a near contemporary of Christ, scholars have tried to use Genesis 2 to locate Eden. But the problem has always been the identification of the rivers themselves.
The first two are no problem: The remaining two rivers, however, have always been a mystery. Clearly, in order to locate Eden precisely, we need to find the sources of all four - and that's where Walker's research comes in.
By checking the writings of the Islamic geographers who accompanied the Arabic invasion of Persia in the 8th century, I was able to confirm that this was indeed the case. Moreover, even as late as the last century, Victorian atlases and encyclopaedias were still naming the river as the Gaihun-Aras. The Gaihun is therefore the missing biblical Gihon.
The Evidence for a Recent Dating for Adam, 14, to 15, years ago
The fourth river - the Pishon - was more difficult to find. Walker suggested that this Hebrew West Semitic name derived from the old Iranian Uizhun, where the Iranian vowel 'U' had been converted into the Semitic labial consonant 'P'. Thus we have Uizhun to Pizhun to Pishon.
Strange as it may seem, such switches do occur between the two language groups. For instance, one archaeological site in Iran is known by its Arabic West Semitic name of Pisdeli whereas its ancient Iranian name was Uishteri. The river Uizhun the modern Qezel Uzun - thus identified as the biblical Pishon - flows down from the mountains of Kurdistan and empties into the southern basin of the Caspian Sea.
The four rivers of Eden.
London escorts at Silver Fox escort agency. Elite dates with beautiful women throughout London
Bringing all this together we find that the sources of all four rivers originate in the highland area which Alexander the Great knew as Armenia and we know today as eastern Turkey and western Iran. A crucial line in the epic describes the envoy descending from the last of the seven mountain passes the Sumerians called them 'gates' and crossing a broad plain before arriving at the city of Aratta with its red-painted city wall. The envoy, journeying to Aratta, covered his feet with the dust of the road and stirred up the pebbles of the mountains.
So, combining Walker's discovery of the four rivers together with the Sumerian location of Eden, it seemed as though the whereabouts of the lost Eden and its fabled garden was near to being resolved. I decided to set out for the ancient city of Susa burial place of Daniel of the lions' den in the south-western flood plain of Iran Iraq was off bounds for obvious reasons from where I determined to retrace the Sumerian envoy's route to paradise.
Sex Personals Local People Using No Strings Sex Personal Ads For Casual Encounters
Following the ancient track through the seven 'gates', I eventually reached the Miyandoab plain to the south of Lake Urmia. The journey had taken four days by car but would have taken the envoy the best part of four months by donkey. We are a new and excitting escort directory who provide an exclusive service to clients throughout the city of London. We are dedicated to providing the most discreet first class service which you would expect from a professional function; so we provide select in-call locations and out-call destinations of your choice including all of London's airports.
We value our girls highly and love working for them, so you will find that the service you get will be from a gorgeous, happy and attentive escort. Photos that you see on here are an all genuine and we also have detailed descriptions reflecting their real characters and personalities as provided by them.
London ladyboys is London's Capitols newest escort directory offering the services of a variety of independent, elite and beautiful women originating from all across the globe. All of these sexy London escorts have carefully selected us to ensure that we fit with their aim to provide high class, tailored personal service to all of their clients.
Everything that you would expect from an exclusive, elite escort directory like London Ladyboys services. Locations which they offer services to are located along the left hand side of the page which we update with a new area when a new girl employs our services and joins the team.
This should help you avoid being disappointed by a shemale escort not being available in the area which you desire. All girls available to you in that area will become ready and waiting for you at the touch of a button.
All in-call locations are elegant and very discrete, and of course your cooperation on this is greatly appreciated. All of the girls are professional and very discrete.
Please allow a minimum of 30 minutes for her to arrive This may increase depending on your required location. London Lady Boys escorts are able to see you at their discrete London locations, please speak to us we are waiting to arrange the most amazing experience for you with one of Londons most prettiest, sexiest and the most professional Pre-op Transexual call girls.
London Duo Escort Experience For some one woman just isn't enough and we fully understand this desire which is why we will make it possible for you to experience your very own porn star encounter! So if one girl is not enough for you why don't you put stamina to the test and indulge yourself in a Duo Escort experience. All of these ladies play well together, they are only paired with someone who they want to work with which allows you, their client to experience a real duo escort encounter so it is important to us that the girls are comfortable with each other as well as with you their client.
A menu has been created providing you with a choice for you to be able to select from however should you wish to create your own moment and as they say mix and match so please feel free call us and discuss, your satisfaction is important to each girl and all of the girls have one sole purpose and that is to please you.
Why not spoil yourself when on a date and include an exotic fragrance oil with your experience. The girls promise that you will feel aroused by the sensual touch!! They are feminine, elegant and bursting with energy.
Their tits are full and pert and their booties are perfectly shapes too! All of the Shemales are Pre-Op Transexuals and are all still extremely active in the right areas! Shemale London escorts have no inhibitions, they are completely open minded and are waiting to teach you a thing or two in the bedroom.