Wednesday, May 23, 2012

Does globalization mean we will become one culture?

Does globalization mean we will become one culture?

Fast food outlets around the world (Images copyright: Getty Images)
(Images copyright: Getty Images)
Modern humans have created many thousands of distinct cultures. So what will it mean if globalization turns us into one giant, homogenous world culture? 

Stroll into your local Starbucks and you will find yourself part of a cultural experiment on a scale never seen before on this planet. In less than half a century, the coffee chain has grown from a single outlet in Seattle to nearly 20,000 shops in around 60 countries. Each year, it’s near identical stores serve cups of near identical coffee in near identical cups to hundreds of thousands of people. For the first time in history, your morning cappuccino is the same no matter whether you are sipping it in Tokyo, New York, Bangkok or Buenos Aries.
Of course, it is not just Starbucks. Select any global brand from Coca Cola to Facebook and the chances are you will see or feel their presence in most countries around the world. It is easy to see this homogenization in terms of loss of diversity, identity or the westernization of society. But, the rapid pace of change also raises the more interesting question of why – over our relatively short history - humans have had so many distinct cultures in the first place. And, if diversity is a part of our psychological make-up, how we will fare in a world that is increasingly bringing together people from different cultural backgrounds and traditions?
To get at this question, I argue that we need to understand what I call our unique ‘capacity for culture’. This trait, which I outline in my book Wired for Culture, makes us stand alone amongst all other animals. Put simply, we can pick up where others have left off, not having to re-learn our cultural knowledge each generation, as good ideas build successively upon others that came before them, or are combined with other ideas giving rise to new inventions.
Take the axe as an example. At first we built simple objects like hand axes chipped or “flaked” from larger stones.  But these would give way to more sophisticated axes, and when someone had the idea to combine a shaped club with one of these hand axes, the first “hafted axe” was born.  Similarly when someone had the idea to stretch a vine between the ends of a bent stick the first bow was born and you can be sure the first arrow soon followed.
Life savers
In more recent history, this ‘cumulative cultural adaptation’ that our capacity for culture grants has been accelerated by the rise of archiving technology. Papyrus scrolls, books and the internet allow us to even more effectively share knowledge with successive generations, opening up an unbridgeable gap in the evolutionary potential between humans and all other animals.
Chimpanzees, for example, are renowned for their “tool use” and we think this is evidence of their intelligence. But you could go away for a million years and upon your return the chimpanzees would still be using the same sticks to ‘fish’ for termites and the same rocks to crack open nuts – their “cultures” do not cumulatively adapt.  Rather than picking up where others have left off, they start over every generation. Just think if you had to re-discover how to make fire, tan leather, extract bronze or iron from earth, or build a smartphone from scratch.  That is what it is like to be the other animals.
Not so for humans. Around 60,000 years ago, cumulative cultural adaptation was what propelled modern humans out of Africa in small tribal groups, by enabling us to acquire knowledge and produce technologies suitable to different environments.  Eventually these tribes would occupy nearly every environment on Earth – from living on ice to surviving in deserts or steaming jungles, even becoming sea-going mariners as the Polynesians did. And amongst each one we see distinct sets of beliefs, customs, language and religion.

The importance of the tribe in our evolutionary history has meant that natural selection has favoured in us a suite of psychological dispositions for making our cultures work and for defending them against competitors.  These traits include cooperation, seeking affiliations, a predilection to coordinating our activities, and tendencies to trade and exchange goods and services.  Thus, we have taken cooperation and sociality beyond the good relations among family members that dominate the rest of the animal kingdom, to making cooperation work among wider groups of people.
In fact, we have evolved a set of dispositions that allow us to treat other members of our tribe or society as “honorary relatives”, thereby unlocking a range of emotions that we would normally reserve for other family members.  A good example of this so-called cultural nepotism is the visceral feeling you have when one of your nation’s soldiers is lost in battle – just compare that feeling to how you react to the news of a similar loss of a soldier from another nation. We also see our cultural nepotism in the dispositions we have to hold doors for people, give up our seats on trains, or contribute to charities, and we might even risk our lives jumping into a river to save someone from drowning, or when we fight for our countries in a war.
Of course, this nepotism is not just a positive force. It is also a trait that can be exploited by propagandists and to produce Kamikaze-like or other suicidal behaviors. But the success of cooperation as a strategy has seen our species for at least the last 10,000 years on a long evolutionary trajectory towards living in larger and larger social groupings that bring together people from different tribal origins.  The economies of scale that we realize even in a small grouping ‘scale up’ in larger groups, so much so that larger groups can often afford to have armies, to build defensive walls around their settlements.  Large groups also benefit from the efficiencies that flow from a division of labour, and from access to a vast shared store of information, skills, technology and good luck.
‘One world’
And so in a surprising turn, the very psychology that allows us to form and cooperate in small tribal groups, makes it possible for us to form into the larger social groupings of the modern world.  Thus, early in our history most of us lived in small bands of maybe 50 to 200 people.  At some point tribes formed that were essentially coalitions or bands of bands.  Collections of tribes later formed into chiefdoms in which for the first time in our history a single ruler emerged.
Eventually several chiefdoms would come together in nascent city-states such as Catal-Huyuk in present day Turkey or Jericho in the Palestinian West-Bank, both around 10,000 years old.  City-states gave way to nations states, and eventually to collections of states such as the United Kingdom or the United States, and even in our modern world to collections of nations such as seen in the European Union.  At each step formerly competing entities discovered that cooperation could return better outcomes than endless cycles of betrayal and revenge.
This is not to say that cooperation is easy, or that it is never subject to reversals.  Just look at the outpouring of cultural diversity that sprang up with the collapse of the Soviet Union. Despite being suppressed for decades, almost overnight Turkmenistan, Uzbekistan, Kazakhstan, Chechnya, Tajikistan, Moldova, Kyrgyzstan, and Dagestan reappeared, all differentiated by culture, ethnicity, and language.
So how will these two competing tendencies that comprise our evolved tribal psychology – one an ancient disposition to produce lots of different cultures, the other an ability to extend honorary relative status to others even in large groupings  – play out in our modern, interconnected and globalised world?   There is in principle no reason to rule out a “one world” culture, and in some respects, as Starbucks vividly illustrates, we are already well on the way.

Thus, it seems our tribal psychology can extend to groups of seemingly nearly any size.  In large countries such as the United Kingdom, Japan, the United States, Brazil, India and China hundreds of millions and even over a billion people can all be united around a single tribal identity as British or Japanese, American, Indian or Chinese and they will have a tendency to direct their cultural nepotism towards these other members of their now highly extended tribe.  If you take this behaviour for granted, just imagine 100,000 dogs or hyenas packed into a sporting arena – not a pretty sight.
‘Bumpy road’
But two factors looming on the horizon are likely to slow the rate at which cultural unification will happen.  One is resources, the other is demography.   Cooperation has worked throughout history because large collections of people have been able to use resources more effectively and provide greater prosperity and protection than smaller groups.  But that could change as resources become scarce.
This must be one of the most pressing social questions we can ask because if people begin to think they have reached what we might call ‘peak standard of living’ then they will naturally become more self-interested as the returns from cooperation begin to leak away.  After all, why cooperate when there are no spoils to divide?
Related to this, the dominant demographic trend of the next century will be the movement of people from poorer to richer regions of the world.  Diverse people will be brought together who have little common cultural identity of the sort that historically has prompted our cultural nepotism, and this will happen at rates that exceed those at which they can be culturally integrated.
At first, I believe, these factors will cause people to pull back from whatever level of cultural ‘scaling’ they have achieved to the previous level.  An example is the nations of the European Union squabbling over national versus EU rights and privileges.  A more troubling example might be the rise of nationalist groups and political parties, such as Marine le Pen’s Front National in France, or similar far right groups in Britain and several European nations.
Then, if the success of modern societies up to this point is anything to go by, new and ever more heterogeneous and resource-scarce societies will increasingly depend upon clear enforcement of cultural or democratically derived rules to maintain stability, and will creak under the strain of smaller social groupings seeking to disengage further from the whole.
One early harbinger of a sense of decline in the sense of ‘social relatedness’ might be the increasing tendencies of people to avoid risk, to expect safety, to be vigilant about fairness, to require and to be granted “rights.” These might all be symptoms of a greater sense of self-interest, brought about perhaps by declines in the average amount of “togetherness” we feel.  When this happens, we naturally turn inwards, effectively reverting to our earlier evolutionary instincts, to a time when we relied on kin selection or cooperation among families for our needs to be met.
Against this backdrop the seemingly unstoppable and ever accelerating cultural homogenization around the world brought about by travel, the internet and social networking, although often decried, is probably a good thing even if it means the loss of cultural diversity: it increases our sense of togetherness via the sense of a shared culture.  In fact, breaking down of cultural barriers – unfashionable as this can sound – is probably one of the few things that societies can do to increase harmony among ever more heterogeneous peoples.

So, to my mind, there is little doubt that the next century is going to be a time of great uncertainty and upheaval as resources, money and space become ever more scarce.  It is going to be a bumpy road with many setbacks and conflicts. But if there was ever a species that could tackle these challenges it is our own.  It might be surprising, but our genes, in the form of our capacity for culture, have created in us a machine capable of greater cooperation, inventiveness and common good than any other on Earth. And of course it means you can always find a cappuccino just the way you like it no matter where we wake up. 

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Who works the longest hours?

Who works the longest hours?


Clockwise from top left: medical staff, cook, factory worker, office man, taxi rank
Chill winds sweeping the world economy have left many people out of a job, and some of those still working have been asked to worker longer hours for the same pay. Recently the UK government urged the country to work harder, after slipping back into recession. So which countries put the most hours in?
A look at the average annual hours worked per person in selected countries puts South Korea top with a whopping 2,193 hours, followed by Chile on 2,068.
British workers clock up 1,647 hours and Germans 1,408 - putting them at the bottom of the table, above only the Netherlands.
Greek workers have had a bad press recently but, as we reported in February, they work longer hours than any other Europeans. Their average of 2,017 hours a year puts them third in the international ranking, based on figures compiled by the Organisation for Economic Co-operation and Development (OECD).

Time off around the world

  • Workers are generally given paid annual leave and paid public holidays
  • In many countries, though not the US, a minimum amount of paid leave is guaranteed by law
  • In European Union countries this minimum ranges from 20 to 25 days, but in practice the figure is often higher - in Germany and Denmark the average was 30 days in 2010
  • Public holidays in the EU vary from five in the Netherlands, to 14 in Spain (2010 figures) - in England and Wales there are eight in a normal year, in Scotland nine, and in Northern Ireland 10
  • Workers in the US are given an average of nine days of paid leave and six paid public holidays (2006 figures)
  • Not all employees take the paid leave they are entitled to - Japanese workers were given 18 days on average in 2010, but took less than half of it
Source: European Industrial Relations Observatory; Center for Economic and Policy Research; Japan Institute for Labour Policy and Training
It's worth mentioning that the OECD has only 34 members - most of them developed countries - and some very important countries, such as India, China and Brazil, are not among them.
The OECD data includes full and part-time salaried workers and the self-employed. It includes all the hours they work, including overtime.
While figures are available for some other parts of the world, they are not directly comparable to the OECD data because they are collated very differently or they are out of date, so we are focusing only on the OECD nations.
But by looking at data from the OECD and the International Labour Organization (ILO) we can see some broad and interesting trends.
"Asian countries tend to work the longest [hours], they also have the highest proportion of workers that are working excessively long hours of more than 48 hours a week," says Jon Messenger, an ILO expert on working hours.
"Korea sticks out because it's a developed country that's working long hours," he says. "Normally it's developing countries like Bangladesh, Malaysia, Thailand, Sri Lanka - countries like this that are working long hours."
But working longer doesn't necessarily mean working better.
"Generally speaking, long working hours are associated with lower productivity per hour. Workers are working very long hours to achieve a minimum level of output or to achieve some minimum level of wages because frankly they're not very productive," Messenger says.
Japanese office workers Workers in Asian countries put in the hours
The picture is very different in the developed world, where working hours have been falling.
"Over the last century, you've seen a reduction from very long working hours - nearly 3,000 a year at the beginning of the 1900s - to the turn of the 21st Century when most developing countries were under 1,800 hours," says Messenger. "And indeed some of the most productive countries were even lower than that."
The drop in working hours is in part a reflection of the greater number of part-time workers in the developed world. A large number of part-time workers brings down a country's average - in the case of Japan, for example, a high proportion of people work excessive hours, but many also work part-time, leaving the country in the middle of the table, with 1,700 hours.
"You have more and more people working part-time hours," says Messenger. "They're quite capable of supporting themselves, quite capable of producing what they need to produce, so it's just not necessary to work longer than that."

More or Less: Behind the stats

Listen to More or Less on BBC Radio 4 and the World Service, or download the free podcast
Tighter labour laws in developed countries, particularly in Europe, have also reduced working hours. The differences between the most developed nations are small but leave entitlement makes a difference.
Messenger says the average Briton works 150 fewer hours than an American.
"The difference is really driven by the fact that the US is the only developed country that has no legal or contractual or collective requirement to provide any minimum amount of annual leave," he says.
The UK, in contrast, is subject to the European working time directive, which requires at least four weeks of paid annual leave for every employee.
Some European countries have a higher statutory level of paid leave - 25 days in Austria, Denmark, France, Italy, Luxembourg and Sweden in 2010, according to the European Industrial Relations Observatory (Eiro). And some employers provide more paid leave than the statutory miniumum.
Paid public holidays, which come on top of that, averaged between nine and 10 in the European Union in 2010.
"The combined total of agreed annual leave and public holidays varied in the EU from 40 days in Germany and Denmark to 27 days in Romania - a difference of around 48% or 2.5 working weeks," Eiro said in a report published last year.
When comparing hours worked, however, there's one more thing which must be acknowledged.
Each country collects its own data, and their methods may be not always be perfectly comparable.

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Calcium pills have 'heart risk'

Calcium pills have 'heart risk'


Calcium pills Researchers urge caution on calcium pills

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People who take calcium supplements could be increasing their risk of having a heart attack, according to researchers in Germany.
Calcium is often taken by older people to strengthen bones and prevent fractures.
But the study, published in the journal Heart, said the supplements "should be taken with caution".
Experts say promoting a balanced diet including calcium would be a better strategy.
The researchers at the German Cancer Research Centre, in Heidelberg, followed 23,980 people for more than a decade.
They compared the number of heart attacks in people who were taking calcium supplements with those who did not.
'Taken with caution'

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We need to determine whether the potential risks of the supplements outweigh the benefits calcium can give sufferers of conditions such as osteoporosis”
Natasha Stewart British Heart Foundation
There were 851 heart attacks among the 15,959 people who did not take any supplements at all. However, people taking calcium supplements were 86% more likely to have had a heart attack during the study.
The researchers said that heart attacks "might be substantially increased by taking calcium supplements" and that they "should be taken with caution".
Dr Carrie Ruxton, from The Health Supplements Information Service, said: "Osteoporosis is a real issue for women and it is irresponsible for scientists to advise that women cut out calcium supplements on the basis of one flawed survey, particularly when the link between calcium, vitamin D and bone health is endorsed by the European Food Safety Authority."
The British Heart Foundation (BHF) said patients prescribed the supplements should keep taking their medication, but should also speak to their doctor if they were concerned.
'Not safe' Natasha Stewart, a senior cardiac nurse with the BHF, said: "This research indicates that there may be an increased risk of having a heart attack for people who take calcium supplements.
"However, this does not mean that these supplements cause heart attacks.
"Further research is needed to shed light on the relationship between calcium supplements and heart health. We need to determine whether the potential risks of the supplements outweigh the benefits calcium can give sufferers of conditions such as osteoporosis."
Ian Reid and Mark Bolland, researchers at the University of Auckland in New Zealand, said: "The evidence is also becoming steadily stronger that it is not safe, nor is it particularly effective.
"Therefore, the administration of this micro nutrient should not be encouraged; rather people should be advised to obtain their calcium intake from an appropriately balanced diet.
"We should return to seeing calcium as an important component of a balanced diet and not as a low cost panacea to the universal problem of postmenopausal bone loss."
A spokeswoman for the UK's Department of Health said it would consider the study carefully once the complete article had been published.
"The majority of people do not need to take a calcium supplement," she said.
"A healthy balanced diet will provide all the nutrients, including calcium, that they need. Good sources of calcium include milk and dairy foods, fortified dairy food alternatives, e.g. soya drink, and green leafy vegetables."

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Ancient walking mystery deepens

Ancient walking mystery deepens


Reconstruction of the body of Ichthyostega Reconstruction of the body of Ichthyostega

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One of the first creatures to step on land could not have walked on four legs, 3D computer models show.
Textbook pictures of the 360-million-year-old animal moving like a salamander are incorrect, say scientists.
Instead, it would have hauled itself from the water using its front limbs as crutches, research in Nature suggests.
The move from living in water to life on land - a pivotal moment in evolution - must have been a gradual one.
Ichthyostega is something of an icon in the fossil world. Living during the Upper Devonian period, it was dubbed a "fishapod", with its mixture of fish-like and amphibious features.

“Start Quote

Our reconstruction demonstrates that the old idea, often seen in popular books and museum displays, of Ichthyostega looking and walking like a large salamander, with four sturdy legs, is incorrect”
Prof Jenny Clack University of Cambridge
Although it probably spent much of its time under water, at times it was thought to have crawled halfway up onto land on limb-like flippers.
Exactly how it moved on land has been a matter of much debate, however.
Now, a team from The Royal Veterinary College, London and the University of Cambridge, has spent three years reconstructing the first 3D computer model of Ichthyostega from fossils.
It enabled them to study how ancient vertebrates made the "monumental transition" from swimming to walking.
Study author Dr Stephanie Pierce, of The Royal Veterinary College, said the 3D skeleton allowed them to calculate the range of movement in the joints of its limbs for the first time.
The research suggests the animal shuffled on land using hind limb movements similar to that seen in seals rather than moving its limbs in the familiar walking pattern seen today.
Dr Pierce told BBC News: "We're almost bringing the animal back to life by doing this.
"What we've discovered is that some early tetrapods definitely did not have the ability to walk on land. We at this stage are not actually sure which animals - or group of animals - were the first to do this."
Co-author Prof Jenny Clack from the University of Cambridge added: "Our reconstruction demonstrates that the old idea, often seen in popular books and museum displays, of Ichthyostega looking and walking like a large salamander, with four sturdy legs, is incorrect."
Fundamental question Commenting on the study, Dr Susannah Maidment of London's Natural History Museum, said understanding where we came from, or where all the things that live on the land came from, is one of the most fundamental questions.
"What this study suggests is that this animal, which has been traditionally thought of as the first four legged animal to walk on land wasn't walking on land at all.
"It sends us almost back to the drawing board...I guess it even sends you back to the field to look for more fossils."
The research, reported in a paper in Nature, was funded by the Natural Environment Research Council.

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Thursday, March 8, 2012

Touch-and-go tablet and computer screens

Touch-and-go tablet and computer screens

(Copyright: Getty Images)

(Copyright: Getty Images)

The new iPad launched yesterday amid its usual fanfare. But could dwindling supplies of a crucial component make such events a thing of the past?

Another iPad launch, another event filled with intense anticipation and speculation. This time Apple’s CEO Tim Cook revealed that the latest iteration of iPad will feature a high-definition screen, and no doubt its competitors will rapidly follow suit.

But there is a problem looming on the horizon for fans of the latest tablet computers, not to mention smart phones and flatscreen TVs. Whether it is on the shiny new iPad, computer or phone, the chances are that you are reading this article through a screen laced with one of the rarest metals on Earth: indium. And analysts are warning that global supplies of indium could be exhausted as soon as 2017. So how will we live without the gadgets that we have come to depend on?

Such a prospect might not seem as alarming as running out of essential commodities, such as food or water. But over the past few decades digital displays have become so enmeshed in our lives that they are integral to our social interactions and livelihoods from rural East Africa to the offices of Wall Street. I have met Kenyan fisherwomen trading their wares via SMS to clients based hundreds of kilometres away – an opportunity that depends on indium just as much as my need to read these words I am typing on my computer monitor.

Wonder metal

Though it was discovered 150 years ago, indium’s remarkable qualities have been harnessed only recently to create wafer-thin electrodes. It is a very soft silvery metal that can be painted onto glass because unlike other soft metals, such as mercury, it wets the glass rather than forming beads. (Another curious property of indium is that when you bend a rod of the metal, it issues a high-pitched crackling sound, known as its “cry”.)

Indium is most useful, however, when it is manufactured into indium tin oxide, or ITO. The reason you cannot see it is because when indium reacts with oxygen, it becomes transparent. This, plus its tremendous ability to conduct electricity, allows our mobile phones to be smarter, our TV flatscreens to be larger and our tablet computers to be more sleek.

As a result, the price of indium has rocketed in recent years – it went from $60 per kilogramme in 2003 to $1,000 in just three years – giving rise to a whole new indium smuggling industry, primarily out of China. And there is no let up on our demand for hi-tech displays – there were more than 1.5 billion mobile phone handsets alone sold in 2011, one of which was to me.

But the supply of indium cannot meet our voracious demands. Indium is harvested as a byproduct of zinc mining because this so-called "hitchhiker" metal exists almost entirely in trace amounts inside deposits of other ores such as zinc and lead – sometimes as little as 1 part per million. And because indium is not mined in its own right, greater demand for it won't necessarily lead to more being mined, according to Robert Ayres, a physicist and economist at INSEAD business school in France. "Most of the indium is just single atoms stuck inside rock that can never be utilised," he says.

If the most gloomy predictions for indium are true, Ayres says the only solution is to increase recycling efforts. Because of its value, the indium recycling market is already bigger than primary production.

But a single monitor screen typically contains less than 0.5 g of ITO, so recovering such a tiny amount from electronic products is expensive and energy-intensive. "I call indium a “spice metal”, because it's sprinkled into products in a way that makes it almost impossible to recover," says Armin Reller, a materials physicist at the University of Augsburg in Germany.

So what other options do we have to indium? Finding a material that is transparent, light and conducts electricity as efficiently as ITO is a big challenge, but there are some candidates. So-called non-stochiometric tin oxides, which use the far more abundant aluminium, are one option that could be incorporated fairly easily into current manufacturing set-ups. The problem is that they do not perform as well as ITO and that tin is itself running out, with reserves estimated to last another 20-40 years.

Researchers in Germany and Japan are working on a flexible polymer-based material called PEDOT, which when doped with various chemicals becomes more transparent and a better conductor. Again, the polymer relies on non-renewable oil or coal supplies.

What’s desperately needed is a sustainable alternative, and the best solution could come in the shape of a remarkable material called graphene, the subject of a recent Nobel Prize. Like pencil-lead and diamonds, graphene is yet another form of carbon, one of the most abundant elements on Earth. Graphene's carbon atoms are arranged in a flat sheet of hexagons, like chicken wire, and this structure makes it the strongest known material and can conduct electricity as well as copper. And because graphene is just one atom thick, it is almost transparent.

Graphene may be one of the most versatile materials ever discovered – with an endless list of possibilities ranging from miniaturised computer chips to high-capacity batteries (and believe it or not for making extra-strong vodka). But one of its most-desired applications is to roll it up into carbon nanotubes and use it in touchscreens, as it offers several advantages over ITO. Graphene is more stable, so it will survive better in applications where the product will be subjected to constant physical force, such as regular finger-pounding. And graphene's superior flexibility means that it can be shaped in various configurations – you could create a spherical touchscreen, for example.

So why have we not already moved from ITO to carbon? Mark Hersam, a carbon nanotubes pioneer at Northwestern University in Illinois, believes we're waiting for an industry tipping point. "There's tremendous inertia in the electronics sector because the entire industry is modelled around ITO. Big companies like Apple are wedded to the ITO manufacturing processes and will need to invest substantially to start using carbon," he says. However, as the price of indium goes up and it becomes harder to get hold of, there is likely to be a switch."

With solar cells and electronics all competing for the same rare metal, industry is already under increasing pressure to start using a different material, whether that's another metal oxide or novel carbon chicken-wire. Looking through the breathless coverage of the iPad 3 launch on my phone, one thing is for sure: our unwavering enthusiasm for touchscreen/display-screen technologies means we desperately need to find alternatives soon.

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Which jobs have more women than men?

Which jobs have more women than men?

Commuters

Most journalists are women. Most authors are women. Most teachers, lab technicians, therapists, editors, librarians, public relations officers and insurance underwriters are women.

In fact, it is arguable that women now hold a greater proportion of Britain's professional jobs than their representation in the workforce would lead one to expect.

The statistics team in the House of Commons library has just published data on women in public life, the professions and the board room. On International Women's Day it is worth celebrating the progress there has been over the past decade in trying to achieve equality for women in the workplace.

In some parts of public and corporate life there is still some way to go. Just 22% of MPs and peers are women, with a similar proportion in the Cabinet and serving as judges in the courts. As of last month, just 15% of FTSE 100 company directors were women.

But what does equality look like? As I scrutinised the tables of occupations and the ratio of male to female employees, I began to wonder if only 50:50 really represented job done.

A look at official employment stats reveals that the number of men working full-time is 13.58m compared to 7.68m women. The figures for part-time working show 2.01m men and 5.86m women. If we assume that two part-time jobs equals one full-time job, it means that 58% of the workforce are men and 42% are women.

So, it could be argued that equal gender representation within the current employment market would see roughly four out of 10 jobs in any sector held by women.

With this in mind, one sees that among the professions, some 44% of jobs are filled by women - slightly higher than their representation within the workforce might lead one to expect.

Women now make up 45% of the country's GPs, with the same figure in a category comprising solicitors, lawyers, judges and coroners. It is a similar story with scientists - 46% are women.

The employment consequences of the government's austerity package are expected to have a greater impact on women than men, particularly those working part-time in the public sector. There are still glass ceilings for women in some parts of the country's professional and public life.

But on International Women's Day, perhaps it is also worth reflecting on how much has been achieved already.


Table showing Women in the professions, 2001 - 2010

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Stem cells beat kidney rejection

Stem cells beat kidney rejection

Operating theatre
The study involved eight patients

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An injection of stem cells given alongside a kidney transplant could remove the need for a lifetime of drugs to suppress the immune system, say scientists.

Early tests of the technique at US hospitals were successful in a small number of patients.

The journal Science Translational Medicine reports how the majority no longer need anti-rejection medication.

Researchers said it could have a "major impact" on transplant science.

One of the key problems associated with organ transplantation is the risk that the body will "recognise" the new organ as a foreign invader and attack it.

To prevent this, patients take powerful drugs to suppress their immune systems, and will have to do this for life.

The drugs come at a price, preventing organ rejection but increasing the risk of high blood pressure, diabetes and serious infection.

Challenges

The study, carried out at the University of Louisville and the Northwestern Memorial Hospital in Chicago, involved eight patients.

Their transplant came from a live donor, who also underwent a procedure to draw stem cells, the building blocks of their immune system, from the blood.

The transplant recipient's body was prepared using radiotherapy and chemotherapy to suppress their own immune system.

Then the transplant went ahead, with the stem cells put into their body a couple of days later.

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It's almost surreal when I think about it because I feel so healthy and normal”

Lindsay Porter

The idea is that these will help generate a modified immune system that no longer attacks the organ or its new owner.

Although the patients started off with the same anti-rejection drugs, the aim was to reduce these slowly, hopefully withdrawing them completely over time.

Five out of the eight patients involved in the trial managed to do this within a year.

One of those is 47-year-old Lindsay Porter, from Chicago.

She said: "I hear about the challenges recipients have to face with their medications and it is significant.

"It's almost surreal when I think about it because I feel so healthy and normal."

Dr Joseph Leventhal, associate professor of surgery at Northwestern University Feinberg School of Medicine, said: "The preliminary results from this ongoing study are exciting and may have a major impact on organ transplantation in the future."

He said that, as well as kidney patients, the technique might improve the lives of those receiving other organs.

While stem cells from organ donors have been used before, this is the first time it has been used for "mismatched" transplants, in which donors and recipients do not have to be related and immunologically similar.

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Can three minutes of exercise a week help make you fit?

Can three minutes of exercise a week help make you fit?

Michael Mosley on exercise bike

A few relatively short bursts of intense exercise, amounting to only a few minutes a week, can deliver many of the health and fitness benefits of hours of conventional exercise, according to new research, says Dr Michael Mosley. But how much benefit you get from either may well depend on your genes.

When I first read studies which suggested that I could make significant and measurable changes to my fitness by doing just three minutes of exercise a week, I was incredulous.

But this apparently outrageous claim is supported by many years of research done in a number of different countries including the UK, so I decided to give it a go.

“Start Quote

Aerobic fitness is a measure of how good your heart and lungs are at getting oxygen into your body and is an excellent predictor of future health”

My guide into the world of High Intensity Training (HIT), was Jamie Timmons, professor of ageing biology at Birmingham University.

Jamie assured me that by doing just three minutes of HIT a week for four weeks, I could expect to see significant changes in a number of important health indices.

The first, and the one I was most interested in, is insulin sensitivity. Insulin removes sugar from the blood, it controls fat and when it becomes ineffective you become diabetic.

My father was a diabetic and died from complications of that disease. Jamie assured me that research from a number of centres has shown that three minutes of HIT a week improves insulin sensitivity by an average of 24%.

The second improvement I was likely to see would be in my aerobic fitness. Aerobic fitness is a measure of how good your heart and lungs are at getting oxygen into your body and is an excellent predictor of future health. I asked Jamie why.

"The simple answer is we don't know," he replied. "What we do know is that it is a very, very powerful predictor of future health."

Genetic test

So if I could improve my insulin sensitivity and my aerobic fitness then that should improve my general health. But Jamie said there was a potential sting in the tail. There was a possibility that I wouldn't improve. Not because HIT doesn't work but because I've inherited the wrong genes.

FIND OUT MORE

Michael Mosley
  • Michael Mosley presents Horizon: The Truth About Exercise on BBC Two at 21:00 GMT on Tuesday 28 February 2012 or watch online via iplayer (UK only) afterwards at the above link

The fact is that people respond to exercise in very different ways. In one international study 1,000 people were asked to exercise four hours a week for 20 weeks. Their aerobic fitness was measured before and after starting this regime and the results were striking.

Although 15% of people made huge strides (so-called "super-responders"), 20% showed no real improvement at all ("non-responders").

There is no suggestion that the non-responders weren't exercising properly, it was simply that the exercise they were doing was not making them any aerobically fitter.

Jamie and his collaborators investigated the reasons for these variations and discovered that much of the difference could be traced to a small number of genes.

On the basis of this finding they have developed a genetic test to predict who is likely to be a responder, and who is not. Jamie offered me that test. But I would not be told the results until I had completed my HIT regime.

I agreed, had blood taken and went through some baseline tests to assess my starting point, fitness-wise. Then I began to do HIT.

Full throttle

It's actually very simple. You get on an exercise bike, warm up by doing gentle cycling for a couple of minutes, then go flat out for 20 seconds.

A couple of minutes to catch your breath, then another 20 seconds at full throttle. Another couple of minutes gentle cycling, then a final 20 seconds going hell for leather. And that's it.

Michael Mosley tries high intensity training

So how does it work? According to Jamie, and other researchers I spoke to, part of the explanation is (probably) that HIT uses far more of our muscle tissue than classic aerobic exercise.

When you do HIT, you are using not just the leg muscles, but also the upper body including arms and shoulders, so that 80% of the body's muscle cells are activated, compared to 20-40% for walking or moderate intensity jogging or cycling.

Active exercise also seems to be needed to break down the body's stores of glucose, deposited in your muscles as a substance called glycogen. Smash up these glycogen stores and you create room for more glucose to be sucked out of the blood and stored.

Somewhat sceptical I went off and dutifully did my four weeks of HIT, making a grand total of 12 minutes of intense exercise and 36 minutes of gentle pedalling. I then went back to the lab to be retested.

HEALTH AND EXERCISE

The results were mixed. My insulin sensitivity had improved by a remarkable 24%, which was extremely satisfying, but my aerobic fitness had not improved at all.

I was crestfallen, but Jamie was not surprised. It turns out that the genetic test they had done on me had suggested I was a non-responder and however much exercise I had done, and of whatever form, my aerobic fitness would not have improved. My dreams of winning Olympic gold ended there and then.

I will continue doing HIT because I can see the benefits. It won't suit everyone, because although it is short, it is extremely intense. Like any new exercise regime if you have a pre-existing medical condition you should consult your doctor before trying it.

Michael Mosley presents Horizon: The Truth About Exercise is on BBC Two at 21:00 GMT on Tuesday 28 February 2012 or watch online afterwards at the above link.

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Nicolas Sarkozy says France has too many foreigners

Nicolas Sarkozy says France has too many foreigners

Nicolas Sarkozy at his interview on French television [6 March 2012] Nicolas Sarkozy says the system for integrating immigrants is at risk of breaking down

French President Nicolas Sarkozy has said there are too many foreigners in France and the system for integrating them is "working worse and worse".

In a TV debate, Mr Sarkozy defended his plan to almost halve the number of new arrivals if re-elected next month.

Mr Sarkozy is trailing in the opinion polls behind the Socialist candidate Francois Hollande.

He is also competing for conservative voters with the far-right National Front party led by Marine le Pen.

The president said while immigration could be a boon for France, it needed to be controlled more tightly through tougher qualification rules for residency.

Mr Sarkozy, whose father was a Hungarian immigrant, also said he wanted to restrict some benefit payments to immigrants who had been in the country for 10 years.

Tough new rules

He has often made controversial comments on race and immigration issues, sharply dividing opinion in France.

In 2005, just before the Paris riots, he described young delinquents in the Paris suburbs as "racaille", meaning rabble.

He has said that if re-elected, he will reduce the number of immigrants to France from 180,000 a year to 100,000 and introduce tighter controls on access to welfare benefits.

As president, Mr Sarkozy has already pushed through tough new immigration rules, including the controversial deportation of Roma gypsies.

On Tuesday, Prime Minister Francois Fillon caused dismay among Muslim and Jewish groups by suggesting the religious slaughter of animals was out of date.

The controversy started when a TV documentary said last month that all the abattoirs in Paris region only produced halal meat.

So far the election campaign seems to have made relatively little impact on voters.

The latest opinion poll published on Tuesday by CSA showed the Socialist leader Francois Hollande widening his lead over President Sarkozy for the 22 April vote.

It also suggested that the Socialist leader would win decisively by 54% to 46% in a second round of voting on 6 May.

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Commentary

"Give me your tired, your poor/Your huddled masses yearning to breathe free"

What happened to those human values and why have they been replaced with xenophobia?

What happened to looking at a human for who they are, not by their culture or their skin color?

What happened to human dignity and preciousness?

Sarkozy has flushed it all down his french toilet. His people would do well to get rid of his racist french hiney.

The myth of the eight-hour sleep

The myth of the eight-hour sleep

Woman awake

We often worry about lying awake in the middle of the night - but it could be good for you. A growing body of evidence from both science and history suggests that the eight-hour sleep may be unnatural.

In the early 1990s, psychiatrist Thomas Wehr conducted an experiment in which a group of people were plunged into darkness for 14 hours every day for a month.

It took some time for their sleep to regulate but by the fourth week the subjects had settled into a very distinct sleeping pattern. They slept first for four hours, then woke for one or two hours before falling into a second four-hour sleep.

Though sleep scientists were impressed by the study, among the general public the idea that we must sleep for eight consecutive hours persists.

In 2001, historian Roger Ekirch of Virginia Tech published a seminal paper, drawn from 16 years of research, revealing a wealth of historical evidence that humans used to sleep in two distinct chunks.

His book At Day's Close: Night in Times Past, published four years later, unearths more than 500 references to a segmented sleeping pattern - in diaries, court records, medical books and literature, from Homer's Odyssey to an anthropological account of modern tribes in Nigeria.

A woman tending to her husband in the middle of the night by Jan Saenredam, 1595 Roger Ekirch says this 1595 engraving by Jan Saenredam is evidence of activity at night

Much like the experience of Wehr's subjects, these references describe a first sleep which began about two hours after dusk, followed by waking period of one or two hours and then a second sleep.

"It's not just the number of references - it is the way they refer to it, as if it was common knowledge," Ekirch says.

During this waking period people were quite active. They often got up, went to the toilet or smoked tobacco and some even visited neighbours. Most people stayed in bed, read, wrote and often prayed. Countless prayer manuals from the late 15th Century offered special prayers for the hours in between sleeps.

And these hours weren't entirely solitary - people often chatted to bed-fellows or had sex.

A doctor's manual from 16th Century France even advised couples that the best time to conceive was not at the end of a long day's labour but "after the first sleep", when "they have more enjoyment" and "do it better".

Ekirch found that references to the first and second sleep started to disappear during the late 17th Century. This started among the urban upper classes in northern Europe and over the course of the next 200 years filtered down to the rest of Western society.

By the 1920s the idea of a first and second sleep had receded entirely from our social consciousness.

When segmented sleep was the norm

  • "He knew this, even in the horror with which he started from his first sleep, and threw up the window to dispel it by the presence of some object, beyond the room, which had not been, as it were, the witness of his dream." Charles Dickens, Barnaby Rudge (1840)
  • "Don Quixote followed nature, and being satisfied with his first sleep, did not solicit more. As for Sancho, he never wanted a second, for the first lasted him from night to morning." Miguel Cervantes, Don Quixote (1615)
  • "And at the wakening of your first sleepe You shall have a hott drinke made, And at the wakening of your next sleepe Your sorrowes will have a slake." Early English ballad, Old Robin of Portingale
  • The Tiv tribe in Nigeria employ the terms "first sleep" and "second sleep" to refer to specific periods of the night

Source: Roger Ekirch

He attributes the initial shift to improvements in street lighting, domestic lighting and a surge in coffee houses - which were sometimes open all night. As the night became a place for legitimate activity and as that activity increased, the length of time people could dedicate to rest dwindled.

In his new book, Evening's Empire, historian Craig Koslofsky puts forward an account of how this happened.

"Associations with night before the 17th Century were not good," he says. The night was a place populated by people of disrepute - criminals, prostitutes and drunks.

"Even the wealthy, who could afford candlelight, had better things to spend their money on. There was no prestige or social value associated with staying up all night."

That changed in the wake of the Reformation and the counter-Reformation. Protestants and Catholics became accustomed to holding secret services at night, during periods of persecution. If earlier the night had belonged to reprobates, now respectable people became accustomed to exploiting the hours of darkness.

This trend migrated to the social sphere too, but only for those who could afford to live by candlelight. With the advent of street lighting, however, socialising at night began to filter down through the classes.

In 1667, Paris became the first city in the world to light its streets, using wax candles in glass lamps. It was followed by Lille in the same year and Amsterdam two years later, where a much more efficient oil-powered lamp was developed.

London didn't join their ranks until 1684 but by the end of the century, more than 50 of Europe's major towns and cities were lit at night.

Night became fashionable and spending hours lying in bed was considered a waste of time.

Street-lighting in Leipzig in 1702 A small city like Leipzig in central Germany employed 100 men to tend to 700 lamps

"People were becoming increasingly time-conscious and sensitive to efficiency, certainly before the 19th Century," says Roger Ekirch. "But the industrial revolution intensified that attitude by leaps and bounds."

Strong evidence of this shifting attitude is contained in a medical journal from 1829 which urged parents to force their children out of a pattern of first and second sleep.

"If no disease or accident there intervene, they will need no further repose than that obtained in their first sleep, which custom will have caused to terminate by itself just at the usual hour.

"And then, if they turn upon their ear to take a second nap, they will be taught to look upon it as an intemperance not at all redounding to their credit."

Today, most people seem to have adapted quite well to the eight-hour sleep, but Ekirch believes many sleeping problems may have roots in the human body's natural preference for segmented sleep as well as the ubiquity of artificial light.

This could be the root of a condition called sleep maintenance insomnia, where people wake during the night and have trouble getting back to sleep, he suggests.

The condition first appears in literature at the end of the 19th Century, at the same time as accounts of segmented sleep disappear.

"For most of evolution we slept a certain way," says sleep psychologist Gregg Jacobs. "Waking up during the night is part of normal human physiology."

The idea that we must sleep in a consolidated block could be damaging, he says, if it makes people who wake up at night anxious, as this anxiety can itself prohibit sleeps and is likely to seep into waking life too.

Stages of sleep

Every 60-100 minutes we go through a cycle of four stages of sleep

  • Stage 1 is a drowsy, relaxed state between being awake and sleeping - breathing slows, muscles relax, heart rate drops
  • Stage 2 is slightly deeper sleep - you may feel awake and this means that, on many nights, you may be asleep and not know it
  • Stage 3 and Stage 4, or Deep Sleep - it is very hard to wake up from Deep Sleep because this is when there is the lowest amount of activity in your body
  • After Deep Sleep, we go back to Stage 2 for a few minutes, and then enter Dream Sleep - also called REM (rapid eye movement) sleep - which, as its name suggests, is when you dream

In a full sleep cycle, a person goes through all the stages of sleep from one to four, then back down through stages three and two, before entering dream sleep

Source: Gregg Jacobs

Russell Foster, a professor of circadian [body clock] neuroscience at Oxford, shares this point of view.

"Many people wake up at night and panic," he says. "I tell them that what they are experiencing is a throwback to the bi-modal sleep pattern."

But the majority of doctors still fail to acknowledge that a consolidated eight-hour sleep may be unnatural.

"Over 30% of the medical problems that doctors are faced with stem directly or indirectly from sleep. But sleep has been ignored in medical training and there are very few centres where sleep is studied," he says.

Jacobs suggests that the waking period between sleeps, when people were forced into periods of rest and relaxation, could have played an important part in the human capacity to regulate stress naturally.

In many historic accounts, Ekirch found that people used the time to meditate on their dreams.

"Today we spend less time doing those things," says Dr Jacobs. "It's not a coincidence that, in modern life, the number of people who report anxiety, stress, depression, alcoholism and drug abuse has gone up."

So the next time you wake up in the middle of the night, think of your pre-industrial ancestors and relax. Lying awake could be good for you.

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