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Sunday, March 30, 2008

Mobile phones 'more dangerous than smoking'

Brain expert warns of huge rise in tumours and calls on industry to take immediate steps to reduce radiation


ALAMY

Young people are at particular risk from exposure to radiation

Mobile phones could kill far more people than smoking or asbestos, a study by an award-winning cancer expert has concluded. He says people should avoid using them wherever possible and that governments and the mobile phone industry must take "immediate steps" to reduce exposure to their radiation.

The study, by Dr Vini Khurana, is the most devastating indictment yet published of the health risks.

It draws on growing evidence – exclusively reported in the IoS in October – that using handsets for 10 years or more can double the risk of brain cancer. Cancers take at least a decade to develop, invalidating official safety assurances based on earlier studies which included few, if any, people who had used the phones for that long.

Earlier this year, the French government warned against the use of mobile phones, especially by children. Germany also advises its people to minimise handset use, and the European Environment Agency has called for exposures to be reduced.

Professor Khurana – a top neurosurgeon who has received 14 awards over the past 16 years, has published more than three dozen scientific papers – reviewed more than 100 studies on the effects of mobile phones. He has put the results on a brain surgery website, and a paper based on the research is currently being peer-reviewed for publication in a scientific journal.

He admits that mobiles can save lives in emergencies, but concludes that "there is a significant and increasing body of evidence for a link between mobile phone usage and certain brain tumours". He believes this will be "definitively proven" in the next decade.

Noting that malignant brain tumours represent "a life-ending diagnosis", he adds: "We are currently experiencing a reactively unchecked and dangerous situation." He fears that "unless the industry and governments take immediate and decisive steps", the incidence of malignant brain tumours and associated death rate will be observed to rise globally within a decade from now, by which time it may be far too late to intervene medically.

"It is anticipated that this danger has far broader public health ramifications than asbestos and smoking," says Professor Khurana, who told the IoS his assessment is partly based on the fact that three billion people now use the phones worldwide, three times as many as smoke. Smoking kills some five million worldwide each year, and exposure to asbestos is responsible for as many deaths in Britain as road accidents.

Late last week, the Mobile Operators Association dismissed Khurana's study as "a selective discussion of scientific literature by one individual". It believes he "does not present a balanced analysis" of the published science, and "reaches opposite conclusions to the WHO and more than 30 other independent expert scientific reviews".

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A History of the Hangover

Their prevalence during recessions; baseball and the hangover; the search for a cure; are all hangovers bad?

Illustration by Robert Neubecker. Click image to expand.

There is no such thing as the perfect hangover, although anyone who has known more than one of them seems to have the perfect hangover cure. The roast beef sandwich, I've heard it said repeatedly, can't be matched.

Hangovers are not serious enough to be considered a medical condition, and there is, actually, no remedy for them—apart from old wives' tales and roast beef. They're neither a bad cold nor the flu, though they're serious enough to keep some in bed. But are hangovers always bad?

Hangovers were for a long time associated with stock market crashes; the 1929 crash has been written about as if it were the hangover after the wild 1920s. Whether or not traders are more likely to hit the bottle after precipitous falls in the value of their shares is hard to say—not least because it isn't clear what's going on with markets. Are the fallen masters of the universe at Bear Stearns drinking away what remains of their portfolios? One hopes that an enterprising sociologist is doing fieldwork in the bars near the bank's headquarters.

It's easy to understand why, after a swift turn of fate, some men would resort to drink to numb the pain of the losses. But is it possible that it's not so much the drunkenness these men are after as its aftermath? A hangover provides something less intangible and more felt to consider than the horror of newfound poverty. One opinion has it that in circumstances such as those, a hangover isn't a disaster; during one, you decide to begin life all over again, swearing that, no, there will never, not ever, be another experience like this one. The born-again movement has always seemed to be an alcohol-related phenomenon.

Life-changing hangovers are part of popular myth. In the movie The Philadelphia Story, if it weren't for a hangover and how it was arrived at, there would be almost no twist to the plot. Tracy, played by Katherine Hepburn, realizes she's not in love with the man she's about to marry in the midst of such a bad hangover that she can't remember what happened the night before. In the movies—or some of them, at least—the hangover is often a form of punctuation or a paragraph shift, a moment of blistering agony but also of remarkable clarity. (In real life, the clearest of thoughts don't always emerge when you're trying suppress the throbbing going on inside you head.)

How many hangovers there are in the United States a year is an impossible question to answer: Different people react to drink in different ways. In Scotland, a country famous for its drinking, the hangover remedy bought in shops, Irn Bru—iron brew—is known by some as the true national drink, more than the scotch that has you drinking Irn Bru the next morning. It is said to be made from girders and, like spinach, gives you enormous strength—so much of it that you can will yourself out of any old hangover.

Edmund Wilson said he once inflicted a hangover on T.S. Eliot. "I gave him bootleg gin," Wilson told a friend about an evening he spent with the poet. "He is so shy that you have to drink with him to talk to him—and we both got into bad condition. The next morning he had an awful hangover and said his joints creaked, and I felt as if I had wantonly broken some rare and exquisite vase. I have felt guilty about it ever since." Remorse is one reaction to a hangover, even when it's not your own. And though the hangover itself always dissipates, the remorse sometimes does not, often because it's about neither the hangover nor the drink but something else—such as a broken vase or a lost friend.

But if remorse is one part of the hangover, so is resolve—the refusal to give into the worst of it. This resolve isn't always there; capitulation is just as common. But the refusal to give in, or give up, isn't uncommon, and it's not always fueled by Irn Bru. Years ago, the story goes, an English cricket team toured India, and a maharajah believed he could influence what would be a five-day game by getting two of the players drunk. So he did, and the two men woke up the next morning with bad hangovers. Worse, when the game began, they were the first two players to bat. Yet they survived the entire day—all six hours of it. The adversity of their hangovers appeared to introduce further circumspection to their playing. As in baseball, keeping your eye on the ball is essential for a batsman, and I've heard this tale told to numerous players feeling the worse for wear before the start of a game—to remind them that this may be, improbably, their best day.

Kingsely Amis, for some the hangover godhead, knew all about the resolution associated with hangovers. He said of them that they exerted "a great restraining influence" on life. He also laid down the principle that anyone who says they have a hangover has no hangover, an observation that others less experienced than he might disagree with. Then again, it's not as if experience or another person's wisdom is tremendously helpful in identifying a hangover, and being told about hangovers worse than your own is really no cure.

The Scots, the Irish, the Welsh, and the English seem to have special relationships with the hangover. Why do societies drink? The answer is obvious, in a way, but not entirely. Several years ago, Nature, the science journal, published a report suggesting that drink was, from a biological point of view, engrained among the British. There are historical reasons for that. Fermented drinks contained none of the bugs that could be found in water. In Dublin in the 1940s, it wasn't unusual for people to give the young children Guinness when the water wasn't potable. Contamination-free water is one of the greatest public-health achievements of the last 150 years, and although a glass of water is often the last thing anyone with a hangover wants, it's the absence of water that's partly responsible for the hangover.

Not that there was anything peculiarly Irish, Scottish, English, or Welsh about bad water or about drinking brewed or fermented drinks—or about the hangover. F. Scott Fitzgerald was a bit of an expert. "The hangover," he said in a description of New York in the 1920s, "became a part of the day as well allowed-for as the Spanish siesta." The test pilots Tom Wolfe wrote about in The Right Stuff operated on conditions of a near-permanent hangover. It was their fuel. Flying and drinking and drinking and driving was the military ethos—that's what you did. That's easier to understand among people for whom there really may not be much of a tomorrow. Not everyone is a test pilot living with the prospect of their next and potentially fatal crash.

Drinking and hangovers were for years part of the legislative process on Capitol Hill. In Sean Wilentz's The Triumph of American Democracy, 850 pages pass with barely a drink mentioned. That's a remarkable achievement; in reality, congressional committee chambers in the first half of the 19th century were stashed with liquor every night when there were to be deliberations over a bill, as Joanne Freeman, an immensely witty historian at Yale, pointed out in a recent talk about the violence among congressmen in antebellum Washington. Much of the violence on Capitol Hill during that period—and there were an immense number of fights within Congress before the Civil War—was fuelled by drink and hangovers. And much of the drinking, one suspects, was to fulfill that old Scottish piece of drinking wisdom known as the hair of the dog: The drink to get you out of this hangover and into the next one.

Christopher Hitchens has written memorably about smoking and drinking; in fact, there's almost no better place to begin a consideration of the hangover than with an essay he wrote in the early 1990s on drinking and smoking, which appears in his book For the Sake of Argument. As Hitchens points out, there has been a nicotine ingredient in the modern hangover, and quite a few people swear that it wasn't the drink that did them in the night before; it was the cigarettes. "Only a fool expects smoking and drinking to bring happiness," Hitchens wrote, "just as only a dolt expects money to do so. Like money, booze and fags are happiness, and people cannot expect to pursue happiness in moderation." In the absence of moderation, there will always be hangovers, and when one has finally receded there will sometimes be the elation at having seen it off—sometimes not.

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Life's little mysteries: Why do women wear high heels and why did the kamikaze pilots wear helmets?

Why do women wear high heels? Why are soft drinks in round containers while milk cartons are rectangular? And why did kamikaze pilots bother with helmets? Here, ROBERT H FRANK uses economics to explain the weird and wonderful situations we encounter in everyday life.

Why do women endure the discomfort of high heels?

High heels are uncomfortable and make walking more difficult. Prolonged use can injure the feet, knees and back. So why do women keep wearing them?

The short answer seems to be that women in heels are more likely to attract favourable notice.

In Sense And Sensibility, Jane Austen describes the character Elinor Dashwood as having a "delicate complexion, regular features, and... remarkably pretty figure".

But Austen describes Elinor's sister, Marianne, as "still handsomer. Her form, though not so correct as her sister's, in having the advantage of height, was more striking".

In addition to making women taller, high heels force the back to arch, pushing the bosom forward and the buttocks rearward, thus accentuating the female form.

"Men like an exaggerated female figure," writes fashion historian Caroline Cox. The problem is that if all women wear high heels, such advantages tend to cancel out.

Height, after all, is a relative phenomenon. It may be advantageous to be taller than others, or at least not to be several inches shorter. But when all wear shoes that make them several inches taller, the relative height distribution is unaffected, so no one appears taller than if all had worn flat heels.

If women could decide collectively what shoes to wear, all might agree to forgo high heels. But because any individual can gain advantage by wearing them, such an agreement might be hard to maintain.

Why did kamikaze pilots wear helmets?

On the heels of significant military setbacks in 1944, the Japanese military launched a campaign of kamikaze attacks, in which pilots attempted to crash their planes into American warships. Their aeroplanes were heavily laden with explosives, so a crash meant almost certain death for the pilot. Why, then, did these pilots wear helmets?

One reason is that in at least some instances, kamikaze pilots survived their missions. Another is that planes commonly experienced severe turbulence before reaching their targets, and in these cases Japanese military commanders had clear reasons for wanting their pilots to be adequately protected.

Perhaps even more important, the aviator's helmet had become emblematic of what it meant to be a pilot. Kamikaze pilots were pilots, and all pilots wear helmets.

But the most compelling explanation for why kamikaze pilots wore helmets is that it was not the express intention that these pilots commit suicide. Their charge was to destroy their targets by any means necessary. But the hope was that the pilots would return safely, even though the expectation was that most would not.

Why do women's clothes button from the left, while men's button from the right?

It is hardly surprising that clothing manufacturers might adhere to uniform standards for the various features of garments bought by any given group.

What seems strange, however, is that the standard adopted for women is precisely the opposite of the one for men. If the standard were completely arbitrary, that would be one thing. But the men's standard would appear to make more sense for women as well.

Around 90 per cent of the world's population is right-handed, and it is easier for right-handers to button shirts from the right. So why do women's garments button from the left?

This is an example in which history seems to matter. When buttons first appeared in the 17th century, they were seen only on garments of the wealthy. At that time it was the custom for rich men to dress themselves and for women to be dressed by servants.

Having women's shirts button from the left thus made things easier for the mostly right-handed servants who dressed them. Having men's shirts button from the right made sense not only because most men dressed themselves, but also because a sword drawn from the left hip with the right hand would be less likely to become caught in the shirt. Today, virtually no women are dressed by servants, so why is buttoning from the left still the norm for women?

In economics, a norm, once established, resists change. At a time when all women's shirts buttoned from the left, it would have been risky for any single manufacturer to offer women's shirts that buttoned from the right.

After all, women had grown accustomed to shirts that buttoned from the left and would have to develop new habits and skills to switch.

Beyond that practical difficulty, some women might also have found it socially awkward to appear in public wearing shirts that buttoned from the right, since anyone who noticed would assume they were wearing men's shirts.

Why are petrol caps on the driver's side of some cars but the passenger's side of others?

One OF the most frustrating experiences of driving a hire car is to pull up at a fuel pump as you would when driving your own car, only to discover that the fuel tank is located on the other side. Car manufacturers could eliminate this difficulty simply by putting petrol caps always on the same side of the car. Why don't they?

In countries in which motorists drive on the right side of the road, such as the U.S., it is easier to turn right than to turn left across oncoming traffic. A majority of drivers will thus buy fuel at stations they can enter by turning right.

Suppose fuel tanks were always on the driver's side of the car. Drivers would then have to park on the right side of an open pump in order to fill their tanks.

During busy times, all spots on the right sides of pumps would be filled even while most spots on the left sides of pumps remained empty.

Putting petrol caps on different sides of different cars means that some cars can access pumps from the left. And this makes it less likely that drivers will have to queue for fuel.

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Why are DVDs sold in larger packages than CDs, even though the discs are the same size?

CDs come in cases that are 148mm wide and 125mm high. By contrast, DVDs are sold in cases that are 135mm wide and 191mm high. Why use such different packaging for discs of identical size?

A little digging reveals the historical origins of this difference.

Prior to the appearance of digital CDs, most music was sold on vinyl discs, packaged in close-fitting sleeves that measured 302mm square. The racks on which vinyl discs were displayed were just wide enough, in other words, to accommodate two rows of CD cases with a divider between them.

Making the CD cases a little less than half as wide as the record sleeves they were replacing thus enabled retailers to avoid the substantial costs of replacing their storage and display racks.

Similar considerations seem to have driven the decision regarding DVD packaging. Before DVDs became popular, most film rental stores carried videotapes in the VHS format, which were packaged in form-fitting boxes that measured 135mm wide and 191mm high.

These videos were typically displayed side by side with their spines out. Making DVD cases the same height enabled stores to display their new DVD stocks on existing shelves, while consumers were in the process of switching over to the new format.

Making the DVD package the same height as the VHS package also made switching to DVDs more attractive for consumers, since they could store their new DVDs on the shelves they used for VHS tapes.

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Why are whales in danger of extinction, but not chickens?

Seldom does a year pass without a demonstration decrying international hunting that threatens extinction for many large marine mammal species. Yet to my knowledge there has never been a demonstration exhorting us to save chickens. Why not?

The short answer is that chickens have never been an endangered species. But that just raises the question of why one species is endangered and another not.

Whale populations have been dwindling because no one owns whales. They swim in international waters, and several nations have refused to respect the international treaties that have attempted to protect them.

Japanese and Norwegian whalers understand that their current practices threaten the survival of whales and hence their own livelihood. But each whaler also knows that any whale he does not harvest will be taken by someone else.

By contrast, most chickens in the world are owned by someone.

If you kill one of your chickens today, that is one less chicken you will own tomorrow. If chicken farming were your livelihood, you would have strong incentives to balance the number of birds you send to market and the number of new chicks you acquire.

Chickens and whales are both economically valuable. The fact that people enjoy secure property rights in chickens but not in whales explains why the former are secure and the latter are endangered.

Why don't more people wear shoes with Velcro fasteners?

Learning to tie one's shoelaces was a childhood rite of passage long before Swiss inventor George de Mestral obtained a patent for Velcro in 1955. Since then, Velcro has been replacing zips, hooks, laces and other traditional fastening methods in a host of applications.

As a method of fastening shoes, Velcro offers clear advantages over laces. Laces can become untied, for example, causing people to trip and fall. And fastening shoes with Velcro is much quicker and easier than tying a pair of laces. But although it once seemed that Velcro might drive laces from the marketplace, the proportion of adults who wear shoes with Velcro fasteners remains small. Why have shoelaces survived?

From the beginning, the most popular applications of Velcro in the shoe industry have been in shoes for children as well as the elderly and infirm. Velcro's popularity for children's shoes is explained by the fact that many of the youngest children have not yet learnt how to tie shoelaces.

Among the elderly, Velcro is popular for medical reasons. Some older people have difficulty bending down to tie their shoes, for example, while others have difficulty because of arthritic fingers.

The upshot is that Velcro fasteners on footwear are associated in the public mind with incompetence and fragility. Even though shoes that fasten with Velcro are in many ways more serviceable than lace-ups, shoelaces are unlikely to disappear in the near future.

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