Dark Skies

And the dark skies. Oh let me tell you about the dark skies. No pollution of any kind to blot out the awe inspiring canopy of stars once night falls. Over us is our own galaxy, the Milky Way, so incredible with myriads of stars within the creamy mass. I knew very little about astronomy, still don’t know much, but I gaze in wonder every night on that sky so mysterious and rolling on with infinite glory. We leave in a Dark Skies status region, with the first Dark Sky Park in the UK a short drive away, the Kielder Observatory another even shorter drive in the opposite direction. Where I might have looked up and have seen 100 stars over the city, here I can see 1000 with the naked eye.

Stone Age humans will have gazed on the wondrous sky and felt the same awe we feel today. Over time humans began to piece together various factors which linked to their new farming skills, such as noticing the stellar patterns changed with the seasons. They would learn to plant crops when Virgo and her accompanying constellation appeared in the sky. When Orion arrives in the sky it is time to harvest and to prepare for winter. There are various stone circles in Scotland linked to religious and astronomical practices which helped early humans to feel more in control of their uncertain futures.

The earliest pursuit of mathematics that we have evidence of is 580 – 500 BCE when Pythagoras in Greece, a strict vegetarian, who believed in a silent order for the first 5 years of membership of his cult, recognized the existence of irrational numbers and he and his followers were interested in the relationship between music and mathematics.

Then Aristotle, Athens, a pupil of Plato in 384 – 322 BCE surmised the Solar System must be heliocentric, following his geometrical estimates of the relative sizes and distances of the Earth, Moon and Sun.

Eratosthenes of Cyrene (276-197 BCE) calculated a map of the world, a method for finding prime numbers called Eratosthenes’ Sieve, and estimated the circumference of the Earth.

Claudius Ptolemy, Alexandria (around 100 – 170AD) developed the most sophisticated mathematical model of the motions of the Solar System based upon the geocentric (Earth-centered) model and the principle of perfect circular motion.

Since then many great thinkers have lived in dangerous times due to religion dominating the minds of the population and people did not dare to disagree with proclaimed ‘beliefs’. Despite setbacks, over centuries of conflict and persecution, understanding has triumphed with present day breakthroughs such as ‘Curiosity’ the rover which successfully landed on Mars and is sending back pictures for us all to see with our Internet links. We can look up there and know that, building on the intelligence of mankind we have not only sent man to the moon, but have been able to build technology to explore planets millions of miles away from the Earth.

The first stone circle (so far located in Turkey) was built in 9000 BCE and they continued to be built around the world for thousands of years. No stone-circles appear to have been built in N. Europe after 1,500 BCE. But we have many in Scotland and it is has been shown that many required a strong geometrical and astronomical understanding. There are many recumbent circles in Scotland and these seem to be linked to lunar cycles. They are almost unique to Scotland. A website on the subject states:

http://www.ancient-wisdom.co.uk/stonecircles.htm#purpose

Recumbent Stone Circles are one of the most definite proofs we have that Neolithic people were not only aware of the 18.6 year lunar cycle, but that they followed it closely. They demonstrate that the lunar cycle was considered an important part of the social complex in North-eastern Scotland c. 3,000 BC – 1,500 BC.

The intelligence of human beings can be traced through the constant revelations made by archaeologists using the latest technology plus expertise from across the sciences to analyse the findings.

Knowledge of our world should have led to us protect and value it, to respect one another and work toward benefits for all through intelligent and reasoned analysis. But our Achilles Heel is a human desire to retain power by restricting knowledge and ruling through fear of the unknown. So we say ‘knowledge is power’ and we expect only a selected few to grasp the reigns and ride over the rest of us.

Looking up at the universe in which we live can make any human wax philosophical. We feel so small and insignificant, and it is easy for a seemingly confident person to emphasise our impotence in the face of the overwhelming sense of ignorance most of us experience. We can be conned by so called ‘experts’ and lose sight of our own abilities to question and produce answers. Yet each of us has the spark within us to be curious, to explore, to try and understand this wonderful sense of being. Living in the Scottish Borders has given me a greater feeling of belonging to something so wonderful and available for me to discover in my own time with whatever abilities I possess. That is all any human being should aim to find time to do. I am glad I lived long enough to do it.

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The Weavers

When we arrived at this cottage in which we now live, we found it was better insulated than any home we had ever lived in – which is excellent as we live half way up a mountain. It used to be a ‘bothy’ a type of building we knew nothing about. Anyone who has hiked around rural areas will know the term, but we had mostly walked around shopping malls and streets of cities.

The bothy which preceded our cottage was used for the shepherd to treat sheep away from the main steading, particularly for lambing. Attached to the bothy is a pen to control sheep. Although the bothy had been knocked down and rebuilt as a 2 room cottage, the pen remained in use by the local shepherd until the new landowner sold all the sheep last year. Lambing last year was particularly intense and we were more or less trapped in our cottage, surrounded by sheep and a very busy shepherd dealing with lambs being born every minute or so. He worked solidly and saved many lambs which might have been stillborn but for his swift action and competent manner. Although we had to keep out of his way (and his marvellous collie helper) we saw all the action like a documentary on good shepherding. Previous shepherds working on the estate had never been as thorough or as humane.

9000 years ago a population of 8000 lived in one of the oldest villages known to archaeologists, in Çatalhöyük, Anatolia, Turkey. The Neolithic people lived there for at least 1000 years. They did not have roads or lanes and their four walled homes were pressed up against each other. They farmed 7 miles away from their homes and did not seem to understand how to construct doors or windows, but they were weavers who could create striped fabric. They adorned their walls with high art and, since discovered in 1965, the place attracts many tourists.

Here, it is a 20 mile round trip to the nearest village where the population is around 800 souls. The village was built as a clearance village in the 1700s to create a village of weavers for the growing textile industry. It was built on a flood plain like the Çatalhöyük village. When the river rises and flooding ensues it causes havoc, despite work to build defenses. I wonder how the people of Çatalhöyük managed. I am sure humans then and now are not that different. When Çatalhöyük was discovered, the Scottish Borders had a thriving textile industry. Perhaps there is a link with the Middle Eastern ancestors bridging back over those 9000 years to those weavers.

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Land Use

10,000 years BCE there were around 1 million humans walking this planet. By 1800 AD there were around 1 billion. From Stone Age man, hunting and gathering a wide ranging diet we became farmers, and by 1800 we were dividing up the land of Britain through the Enclosure Act.

There are 7 billion plus world population today. Agriculture is big business with so many mouths to feed.

Humans began farming within small populations around the same time all over the world. People learned through trial and error to develop farming techniques, but some were more inventive than others. Archaeologist have found Incas never had wheels, but Mesopotamians and the Mayas of Central America did. No-one has yet been able to show how grass was grown into an edible form of corn, how bread was invented, how something so inedible as grass became a world wide necessity through farming and baking techniques. As farming requires a settled community around it, then the diet of that community becomes refined down to basics. No longer is the wide ranging healthier diet of the nomadic life available to all.

Hills and mountains are constantly eroded, particularly as an Ice Age melts away, reducing the nutrients in the soil and creating scrub, heath and bog. Where I live, I watch the rains sweep away the rocks, smashing them up on their way to the sea via the many sikes, burns and rivers around our cottage. These high places will one day be gone, washed away. The skin of the Earth constantly changing, we can only imagine what it may have looked like before the last Ice Age.

Land around me has been used to farm sheep for centuries. It was Neolithic Man who made sheep dependent on humans (domesticated), about 10,000 years ago, in south west Asia. People learned sheep were found to be suppliers of milk, clothing material, as well as meat. Sheep were a feral animal in Europe when they were domesticated in Asia. European sheep, genetically, are thought to be descended from Type B compared to Type A for Asian and C linked with Turkey and China. A Type B sheep was found in the Bronze Age in China and thought to have been introduced in 5000 BC.

In the Highlands of Scotland, indigenous people were forced from their homes and no longer allowed to live on land they used to cultivate and survive on. Instead, the land was given over for sheep walks. The sheep were considered more important to the landowners than people. For a short while, such landowners became very rich until the competition from New Zealand sheep farmers broke their hold on the market.

I knew very little about sheep when we came to live here. Being surrounded by a few thousand sheep which fed right up to the fence of the cottage resulted in a fast learning curve. We became very fond of them and grew to recognize them as you would neighbours in your street. They do not have an easy life. The ewes bond with their lambs in a powerful way. They are excellent mothers unless they are unwell. When the lambs leave to be taken to market, they scream for their babies for a few hours, until hoarse. Then they seem to accept they are lost, gone forever. They lose their milk and become fitter, ready for their next pregnancy. These sheep do not have coats which can be used to make wool as they are coarse. They are farmed for their meat only.

We also had around 200 cattle intermingling with the sheep, roaming the hills, making dramatic silhouettes against the skyline as they moved through the fells. As with sheep, it was Neolithic Man in the Near East who domesticated the cow. Cows are strong, so could be used to pull the plough or carry loads, and their blood was found to be nutritious (often extracted from the living animal). One dead cow could feed a large group of people and the skins could be used for clothing and for making useful items. The cattle on this farm were reared for beef.

Land has to be cleared to make way for cattle and sheep. In Britain this started about 6,000 years ago. Wildwood was cut down and probably burned to grow grass for the animals. Early on the cattle would be small, supplying milk and beef. Gradually cattle were farmed for milk, or beef. Beef cows suckle the calf for between 7 and 10 months. After weaning the calves are finished through a variety of feeding systems. Cows are lovely animals, though we found them scary when they came to our fence and had their calves with them. They hate dogs, so, seeing them in our garden, they used to look so fierce and bay at us all. We had to quickly get the dogs in if they arrived unexpectedly, as they often did.

All the sheep and cows are now gone as the new estate owner is planting trees, replacing the animals. The people of Scotland mostly departed these shores (late 1600s onwards) and left it to the landowners to choose how to make profits from the hectares they purchased. There are only around 5254800 (mid-2011) people living in Scotland today, and that population has been boosted by foreign immigrants (over 42,000 arrived in 2011).

Scotland is full of history, enchantment and mystery. 61% of UK windfarms are built in Scotland, reducing the splendour of wild landscapes to industrial degradation. This is clean energy and our Scottish Parliament are proud of their policy of accelerating the placing of Turbines taller then The Eye in London amongst the greatest landscape views in the world, hacking the peat away to ground the monstrous eyesores and possibly knowing, in 25 years time, they will not be decommissioned as promised. I rather expect them to be left to rot. But I am unlikely to be around to find out.

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Ice Ages

The first life on Earth was in the form of bacterial algae, which are photosynthetic organisms. If it were not for them we would never have had oxygen, and without oxygen we would never have had fire.

Life has been extinguished during the 4 ice ages this planet has undergone (rhythmically every 41,000 years). They occur because sunlight shining on the North Pole is insufficient and an ice age ensues. The Earth interacts with the Sun, Moon and other planets in such a way as to evolve seasons which have set the rhythms of our existence. As the Earth tilts on its axis the North Pole tilts toward the sun in summer and away in winter. Around every 23 millennia (1000 years is a millennium) the Earth wobbles (Milankovitch wobble) until the Earth changes its angle of tilt between 22 and 25 degrees cyclically every 41 millennia. It is currently at 23.5 degrees. It takes all those thousands of years to settle back to its ideal state. During that period snow and ice build up in the polar areas and create massive ice sheets. More tilt results in colder winters and hotter summers. Conversely, less tilt will lead to milder winters and cooler summers. As the snow and ice build at the polar region during an ice age, the land closer to the pole also builds more snow and ice. It is thought now that CO2 was the driver which triggered the acceleration of the melting of the last ice age.

Snow and ice reflect the sun’s rays back into space (the albedo effect), leading to an acceleration of cooling. Albedos are on a continuum from 0 (complete absorption) to 1 (complete reflection). As we know our planet is heating up due to CO2 and methane accelerating the process, and that reduces ice and snow, even some cloud cover. We are seeing glaciers retreating much faster than was predicted only a few years ago (although for some reason they are not doing so in the Himalayas). Without the reflection of the sun’s rays back out into space, the sea and land absorb the heat, which intensifies the heating process. Even if we can instantly stop the emissions of greenhouse gases, the heating up will continue as it has a momentum.

Since 1850 to 1980, around 90 to 120 billion metric tons (90-120 trillion kilograms) of carbon dioxide were released into the atmosphere, and an estimated 165 billion metric tons of carbon dioxide were added to the atmosphere by industrial nations through the burning of coal, oil, and gas. Fossil fuel burning has been estimated to release 5.6 gigatons of carbon into the atmosphere each year. Another 2.4 gigatons of carbon per year (about 30 percent of the total) is contributed from burning tropical forests. When, in 1997, Indonesian farmers used slash and burn techniques the result was greater greenhouse gases released than all the cars and power plants in Europe emit in an entire year.

Archeo-geneticists analysed large quantities of mitochondrial DNA from Europeans who belong to two major lineages named J and T. It is known that these haplo-groups originated in the Middle East and migrated to Europe around 9,000 years ago, as the Ice Age drew to a close.

Stone Age man existed in the Middle East around 10,000 years ago (Neolithic Man). Skara Brae in Orkney is the site of a group of ten houses dating back to the Neolithic Period, and thought to be lived in during 3180 BCE–2500 BCE, the people surviving for at least 600 years there.

A few thousand years ago. the Middle East was also where the wolves of the area were bred by the people to become our domesticated dogs here in Europe starting with the chow chow, Shar-pei , the Siberian Husky and the Afghan hound. As a dog lover that fascinates me. We have five dogs currently, collies, Labrador, terrier and daschund. Their genetics go back to the Middle East, and, as a European, most probably I do too.

Our ancestors would have walked across land now submerged by seas and oceans, but then, as the ice receded, coastlines were extended. These form the continental shelves which are now measured to identify fishing rights and oil drilling territorial sovereign ownership.

Example: The Celtic Seas include the shelf area west of Scotland – ICES Subarea Via is quoted in the Irish Statute Book S.I. No. 501/1998 — Herring (Prohibition on Fishing in Ices Divisions Vb, Vian and Vib) Order, 1998. “the specified area” means ICES Sub-area Vb), ICES Sub-area VIa, North of 56 00’N and in that part of VIa which is situated east of 07 00’W and North of 55 00’N, excluding the Clyde and ICES Sub-area VIb.

As the ice retreated the landscape was gouged and moulded by the vast water forces which shaped it so dramatically to become the land on which I walk on a daily basis. Over the thousands of years since the process of melting began, the weather has wreaked its changes too. I never fail to feel overwhelmed by the visual and tactile impact I experience living here.

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Iapetus Ocean

Drilling to the deepest parts of the Earth as possible has led scientists to infer the Earth is about 4.6 billion years old. A period of geological time known as the Archean ( 3.5-3.4 billion years ago) has been studied through modern drilling techniques and evidence reveals climate and geological conditions at that time, regarded by geologists as the cradle for the appearance of bacterial life on Earth.

The oldest crater, 100km wide, was found in Greenland in 2012. It is around 300 billion years old and being studied now as the oldest crater, previously the oldest found was 200 billion years old. The concept of so many billions is hard for me to grasp, especially as our earliest ancestors only emerged millions of years ago.

A 6 million year old fossil found in Ethiopia is thought to be the earliest ancestor of the human race. Finding human-like fossils any older than 6 million years is very unlikely due to the ever changing nature of the skin of the Earth. But life could have been extinguished many times during the billion upon billions of years the Earth has undergone its various cyclic processes. The Earth is an integrated system with the universe, swinging out of control and back into a form of near homeostasis in a rhythmic pattern over thousands and billions of years. Maybe 6 plus million years ago we climbed out of the swamp and became what we are now. But other forms of life may have lived on this planet many times over, and been extinguished when conditions became impossible.

The British Isles was formed between 443 – 416 Millennia ago. The land which originally developed was in the southern hemisphere. It has been named Avalonia which parted from the land mass Gondwana, then collided with another land mass, Baltica, and all drifted toward Laurentia. An ice age in this period in the southern hemisphere extinguished life. When Laurentia collided with Baltica, what would become England was joined to what became Scotland. As ice sheets melted and tectonic plates shifted, the faults created the boundary between the Lowlands and Highlands of Scotland. The Southern Upland Fault and the Iapetus Suture, running from the Solway Firth to Lindisfarne, marks the close of the Iapetus Ocean and the joining of the north to the south of Britain.

The Palaeozoic era was a dramatic period of Earth development as the land masses split, reformed, moved from south to north amid great changes in climate and environment. Around 416 thousand years ago the land I stand on now travelled as the seabed of the Iapetus Ocean and was pushed up during the collision with Avalonia and Baltica to become the Southern Uplands of the Scottish Borders. The rocks which have been quarried by our cottage to be used to build a 5 mile track between South Mid Hill and Tudhope are greywacke. Well named, it is grey, dark rock with much sandstone, some quartz and feldspar interspersed. It is said to be a ‘texturally immature sedimentary rock found in the Palaeozoic strata’.

During the last Glacial Maximum (ending 12,500 years ago) most of the planet was inhospitable. It was cold and dry with frequent storms. The atmosphere was laden with dust. The sea level was lowered due to the ice sheets locking away the water. If any living thing could survive in such harsh conditions, they would have found the continental shelves above the ocean linking land masses together. Ice covered the whole of the British Isles except for a narrow band of southern England where it was a polar desert. The melting of the glaciers since that time changed the shape and contours of the land mass through water erosion to create valleys and the smooth rolling braes of the Borders. Once more habitable, humans created their own history here, albeit as dramatic as the landscape.

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quarried rock, once the seabed of the Iapetus ocean

quarried rock, once the seabed of the Iapetus ocean

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Blipping in the Scottish Borders

BLIPPING IN THE UK

I live in the Scottish Borders. I love this place, contrasting as it does to all the English city life I have endured during 60 years of my life. The ‘banks and braes’ help me to take time to consider what it means to connect with this wild, mostly untouched environment. It was formed through a mighty collision of land masses 100 thousand years ago. It took nearly 400 thousand years for the land to arrive from the southern hemisphere, pass through the tropics and arrive in the northern hemisphere. The land our cottage stands on was once the seabed of the Iapetus Ocean. How can I not be overwhelmed?

Thanks to reading books and searching the Internet, I am a little better informed about this tiny location on our spinning planet. You can check out the facts for yourself. I may make mistakes as I may have misunderstood the science passed from specialist to layperson through the written word. I do think I have grasped the gist of it though.

My ageing process has made me think about the ageing of the Earth. James Lockhart has postulated this Earth is so old that it is unlikely to last more than another 500 million years. ‘An old lady.’

The surface of the earth remains young as it is constantly changing and reforming. Not so for my skin, though being away from polluting air has helped!

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