'Argo' producer scours for the next stranger-than-fiction story

Hunched over a desk in his spartan Westwood apartment, David Klawans squints at his computer monitor and knits his brow in concentration. "I'm perusing," he says.

His eyes dart between headlines almost indecipherable on a Web page displaying about 800 stamp-sized images of newspapers from 90 different countries.

"Two kids running? What's that?" he exclaims before clicking on a photo. "Oh, it's refugees. Whatever. Moving on."

SAG 2013: Winners | Quotes | Photo Booth | Red carpet | Backstage | Best & Worst

Nearly every day, for upward of 10-hour stretches, the independent film producer speed-reads police blogs, articles from RSS feeds and niche-interest journals in dogged pursuit of an elusive prize: a story on which to base his next movie.

His biggest hit to date is "Argo." Before the film landed seven Oscar nominations (including one for best picture) and two Golden Globes (including best drama picture), before it generated more than $180 million in worldwide grosses, "Argo" existed as a declassified story in the quarterly CIA journal Studies in Intelligence, which Klawans happens to have been perusing one day in 1998.

"It's like going on the beach with a metal detector," the self-described news junkie says of his process. "Like Kanye West looks through records to sample on his songs, I'm looking for stories to turn into films."

Klawans, 44, has established himself as Hollywood's least likely movie macher by heeding the advice of his mentor, the old-school producer David Brown ("Jaws," "A Few Good Men"): "Read everything you can get your hands on."

Indefatigable in his quest to root out oddball, overlooked true-life stories, Klawans spins material most others ignore into cinematic gold.

OSCAR WATCH: "ARGO"

"Argo" took nearly 14 years to reach the big screen after Klawans read about CIA exfiltration expert Tony Mendez's rescue of six American diplomats hiding in Tehran during the 1979 Iran hostage crisis. Mendez (portrayed in the movie by "Argo's" director, Ben Affleck) posed the group as Canadian filmmakers scouting locations for a science-fiction film, created a fictitious production company and planted articles about the bogus project in Hollywood trade papers.

Throughout the '90s Klawans was scraping by as a production assistant for an L.A.-based Japanese TV commercial firm. He didn't own a car, so he bicycled to UCLA's magazine archive to check the story. In microfiche files, he came across the CIA's planted articles in the Hollywood Reporter and Variety from January 1980. "My jaw dropped," he says.

Problem was, Mendez already had representation at Creative Artists Agency and was preparing to publish a memoir, "The Master of Disguise." Even so, Klawans persuaded Mendez to let him attempt to set up a movie project. He eventually bought the rights to Mendez's life story as well.

OSCARS 2013: Nominations

"I'm cycling to pitch meetings wearing a backpack with a change of clothes. It's summertime and I'm sweating. And I'm getting to know studio security. They call me 'bike boy,'" remembers Klawans, who would switch from bike to business attire outside the studio gates. "I would basically throw my backpack behind a bush — I was embarrassed to look like a messenger guy."

The New York University film school graduate was born in Chicago. His family moved to Belgium when he was 2 and he grew up in Europe and the U.S. consuming a steady diet of sci-fi and fantasy films including "Star Wars."

He came close to setting up the "Argo" project as a cable TV movie. But when that deal fell through, Klawans says, "it hit me that Tony had planted stories in Variety and Hollywood Reporter as a cover. For the CIA, it's all about illusions and perception. I thought, 'That's what I'm going to do. I'm going to plant an "Argo" story in a magazine.'"

The producer had met former L.A. Weekly staff writer and "This American Life" contributor Joshuah Bearman through friends who thought the two shared an appreciation for offbeat material. Bearman also had experience turning a magazine story into a movie; an article he reported for Harper's became the 2007 documentary "The King of Kong: A Fistful of Quarters," about two die-hard video game players vying for the world's highest score in the vintage arcade game "Donkey Kong."

Klawans handed over his research and contacts to Bearman and proposed that the journalist write "Argo" as a magazine article that would entice movie backers.

Bearman landed an assignment from Wired magazine, then interviewed everyone he could: Mendez, officials in the State Department with knowledge of the exfiltration and Ken Taylor, the Canadian ambassador to Iran who housed some of the fugitive American diplomats, as well as the six embassy "houseguests."

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China's Giant Transport Plane Takes Flight

The Chinese military’s first homegrown long-range transport plane has flown for the first time, extending Beijing’s impressive record of new warplane development.

But the Xian Y-20 (“Y” for Yun, meaning “transport”), roughly in the same class as the U.S. C-17 or the Russian Il-76, is probably still a long way from being fully operational — to say nothing of it being militarily effective. A lack of custom engines limits the new plane’s potential.

State-owned China Central Television depicted the four-engine jet transport taking off from what was probably the military airfield in Yanliang, central China, home of the People’s Liberation Army Air Force testing establishment. The Y-20, still wearing only its yellow primer paint, flew what appeared to be a short test flight and landed in front of a crowd waving Chinese flags. It seems the transport’s landing gear stayed down for the entire sortie — a standard precaution in early tests of new planes.

“The successful maiden flight of Yun-20 is significant in promoting China’s economic and national defense buildup as well as bettering its emergency handling such as disaster relief and humanitarian aid,” the government-run Xinhua news service announced Saturday.

Development of the new transport began no later than 2005, and was possibly spurred in part by the massive earthquake that killed tens of thousands in Sichuan in 2008. In the disaster’s aftermath, the PLAAF — which has long favored jet fighters over more mundane support aircraft — was able to deploy only a handful of small cargo planes carrying relief supplies. The U.S., by contrast, sent in two Boeing C-17s — welcome assistance but also embarrassing for the Chinese Communist Party.

The Y-20 is the latest in a chain of new Chinese airplanes. Since late 2010 Beijing has debuted two stealth fighter prototypes; a new carrier-based naval fighter; plus radar and patrol planes, two gunship helicopters and, now, a heavyweight cargo plane at least as capacious as Russia’s workhorse Il-76, which China also possesses and which seems to provide the basis of the Y-20′s design. Beijing may also have acquired some of the C-17′s blueprints from a spy working at Boeing.

The Y-20 first appeared in blurry snapshots posted to Party-friendly Chinese Internet forums in December — Beijing’s standard procedure for rolling out major new prototype weapons. A series of overhead images provided by U.S. commercial satellite operator GeoEye in early January provided more detail. In contrast to the high degree of official secrecy surrounding other new warplanes, Beijing promptly announced the Y-20′s existence — a move that trade magazine Flightglobal called “remarkable.”

As with China’s other new warplanes, the Y-20 prototype is apparently fitted with older, Russian-made engines rather than purpose-designed motors. A lack of suitable powerplants has slowed progress on many of the new planes. The Y-20′s current D-30 engines are low-bypass models better suited for supersonic fighters than an efficient, slow-flying cargo hauler. Beijing has poured billions of dollars into developing new engines but so far has little to show for it.

“The giant aircraft will continue to undergo experiments and test flights as scheduled,” Xinhua said of the Y-20. But that doesn’t mean the new transport is close to being ready for frontline use.

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Barbara Walters hospitalized with chickenpox

NEW YORK (AP) — Barbara Walters would probably like to hit the reset button on 2013.

She’s got the chickenpox and remains hospitalized more than a week after going in after falling and hitting her head at a pre-inaugural party in Washington on Jan. 19. A fellow host on the “The View,” Whoopi Goldberg, said Monday that Walters has been transferred to a New York hospital and hopes to go home soon.

“She’s been told to rest. She’s not allowed any visitors,” Goldberg said. “And we’re telling you, Barbara, no scratching!”

The 83-year-old news veteran, who underwent heart surgery in May 2010, apparently avoided a disease that hits most people when they are children. It can be serious in older people because of the possibility of complications like pneumonia.

Even after concern about her fall had subsided, Walters had been kept hospitalized last week because of a lingering fever, and doctors found the unexpected cause.

“We love you, we miss you,” Goldberg said on “The View,” in a message to the show’s inventor. “We just don’t want to hug you.”

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Well: Keeping Blood Pressure in Check

Since the start of the 21st century, Americans have made great progress in controlling high blood pressure, though it remains a leading cause of heart attacks, strokes, congestive heart failure and kidney disease.

Now 48 percent of the more than 76 million adults with hypertension have it under control, up from 29 percent in 2000.

But that means more than half, including many receiving treatment, have blood pressure that remains too high to be healthy. (A normal blood pressure is lower than 120 over 80.) With a plethora of drugs available to normalize blood pressure, why are so many people still at increased risk of disease, disability and premature death? Hypertension experts offer a few common, and correctable, reasons:

¶ About 20 percent of affected adults don’t know they have high blood pressure, perhaps because they never or rarely see a doctor who checks their pressure.

¶ Of the 80 percent who are aware of their condition, some don’t appreciate how serious it can be and fail to get treated, even when their doctors say they should.

¶ Some who have been treated develop bothersome side effects, causing them to abandon therapy or to use it haphazardly.

¶ Many others do little to change lifestyle factors, like obesity, lack of exercise and a high-salt diet, that can make hypertension harder to control.

Dr. Samuel J. Mann, a hypertension specialist and professor of clinical medicine at Weill-Cornell Medical College, adds another factor that may be the most important. Of the 71 percent of people with hypertension who are currently being treated, too many are taking the wrong drugs or the wrong dosages of the right ones.

Dr. Mann, author of “Hypertension and You: Old Drugs, New Drugs, and the Right Drugs for Your High Blood Pressure,” says that doctors should take into account the underlying causes of each patient’s blood pressure problem and the side effects that may prompt patients to abandon therapy. He has found that when treatment is tailored to the individual, nearly all cases of high blood pressure can be brought and kept under control with available drugs.

Plus, he said in an interview, it can be done with minimal, if any, side effects and at a reasonable cost.

“For most people, no new drugs need to be developed,” Dr. Mann said. “What we need, in terms of medication, is already out there. We just need to use it better.”

But many doctors who are generalists do not understand the “intricacies and nuances” of the dozens of available medications to determine which is appropriate to a certain patient.

“Prescribing the same medication to patient after patient just does not cut it,” Dr. Mann wrote in his book.

The trick to prescribing the best treatment for each patient is to first determine which of three mechanisms, or combination of mechanisms, is responsible for a patient’s hypertension, he said.

¶ Salt-sensitive hypertension, more common in older people and African-Americans, responds well to diuretics and calcium channel blockers.

¶ Hypertension driven by the kidney hormone renin responds best to ACE inhibitors and angiotensin receptor blockers, as well as direct renin inhibitors and beta-blockers.

¶ Neurogenic hypertension is a product of the sympathetic nervous system and is best treated with beta-blockers, alpha-blockers and drugs like clonidine.

According to Dr. Mann, neurogenic hypertension results from repressed emotions. He has found that many patients with it suffered trauma early in life or abuse. They seem calm and content on the surface but continually suppress their distress, he said.

One of Dr. Mann’s patients had had high blood pressure since her late 20s that remained well-controlled by the three drugs her family doctor prescribed. Then in her 40s, periodic checks showed it was often too high. When taking more of the prescribed medication did not result in lasting control, she sought Dr. Mann’s help.

After a thorough work-up, he said she had a textbook case of neurogenic hypertension, was taking too much medication and needed different drugs. Her condition soon became far better managed, with side effects she could easily tolerate, and she no longer feared she would die young of a heart attack or stroke.

But most patients should not have to consult a specialist. They can be well-treated by an internist or family physician who approaches the condition systematically, Dr. Mann said. Patients should be started on low doses of one or more drugs, including a diuretic; the dosage or number of drugs can be slowly increased as needed to achieve a normal pressure.

Specialists, he said, are most useful for treating the 10 percent to 15 percent of patients with so-called resistant hypertension that remains uncontrolled despite treatment with three drugs, including a diuretic, and for those whose treatment is effective but causing distressing side effects.

Hypertension sometimes fails to respond to routine care, he noted, because it results from an underlying medical problem that needs to be addressed.

“Some patients are on a lot of blood pressure drugs — four or five — who probably don’t need so many, and if they do, the question is why,” Dr. Mann said.

---

How to Measure Your Blood Pressure

Mistaken readings, which can occur in doctors’ offices as well as at home, can result in misdiagnosis of hypertension and improper treatment. Dr. Samuel J. Mann, of Weill Cornell Medical College, suggests these guidelines to reduce the risk of errors:

¶ Use an automatic monitor rather than a manual one, and check the accuracy of your home monitor at the doctor’s office.

¶ Use a monitor with an arm cuff, not a wrist or finger cuff, and use a large cuff if you have a large arm.

¶ Sit quietly for a few minutes, without talking, after putting on the cuff and before checking your pressure.

¶ Check your pressure in one arm only, and take three readings (not more) one or two minutes apart.

¶ Measure your blood pressure no more than twice a week unless you have severe hypertension or are changing medications.

¶ Check your pressure at random, ordinary times of the day, not just when you think it is high.

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DealBook: Goldman Sachs to Sell $1 Billion Stake in Chinese Bank

Goldman Sachs is selling a $1 billion stake in Industrial and Commercial Bank of China, the largest Chinese bank.

The share sale, which was begun on Monday, is the second time in less than a year that Goldman has reduced its holdings in the lender after acquiring its stake before the Chinese bank’s initial public offering in 2006.

Goldman has been selling off its shares as part of a broader effort to reduce its exposure to Industrial and Commercial Bank of China, which has benefited from an almost 50 percent rise in its share price over the six months.

Under the terms of the deal, Goldman will sell Hong Kong-listed shares in the Chinese bank at 5.77 Hong Kong dollars (74 cents) each, according to a person with direct knowledge of the deal who spoke on the condition of anonymity because he was not authorized to speak publicly. The exact number of shares has yet to be confirmed, the person added.

The share sale represents around a 3 percent discount to the bank’s closing share price on Monday.

In April, Goldman also sold $2.5 billion of shares in the bank to the Singaporean sovereign wealth fund Temasek Holdings and other institutional shareholders.

Its investment in the world’s largest bank by market value has proved successful for Goldman. After initially investing around $2.6 billion, Goldman Sachs has raised more than $4.5 billion by progressively selling down its stake in the Chinese bank.

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Deadly nightclub fire in Brazil may have been started by flare

A fire in a crowded nightclub in Brazil has killed over 200 people. Police and firefighters say at least 200 people were injured. (Jan. 27)

This post has been corrected

SAO PAULO, Brazil -- A fire at a nightclub in southern Brazil may have been caused by a flare lit on stage by a live band, according to witnesses to the blaze, which killed at least 231 people early Sunday. [Updated: 10:55 a.m. Jan. 27: Authorities now put the death toll at 232.]

The flare, which may have been part of an on-stage pyrotechnics display, caused the roof of the nightclub to catch fire, witnesses said. Most of the victims died from asphyxiation and smoke inhalation, police said.

Authorities in the southern city of Santa Maria spent the morning rescuing survivors and wading through the tragic aftermath of one of the most deadly fires in a decade. Earlier reports had placed the death toll higher. There were indications that it could still rise.

"There are so many bodies that we couldn't get all the way to the back of the nightclub," Lieutenant Moisés da Silva Fuchs told local media, referring to the now-destroyed Kiss club in Santa Maria, near the Uruguayan and Argentine borders.

The country awoke to troubling images of firefighters and civilians pulling people from the smoking building, and the news has shocked the country.

A tearful President Dilma Rousseff announced she had canceled plans to attend a summit in Chile and would be traveling instead to Santa Maria.

"I'd like to tell the population of our country, and of Santa Maria, that we are all together in this moment," Rousseff said.

Many of the victims were students at local universities, according to witnesses. Fire officials told the Globo television station that the main door was locked when the fire started, but that was denied by Lucas Cauduro Peranzoni, also known as DJ Bolinha, the resident DJ at the club.

"Everyone was pushing one another," Paranzoni said. "I breathed in some of that smoke and I felt woozy. I collapsed at the door and the security guards pulled me out."

At nightclubs in Brazil, it's common for patrons to accumulate a bar tab throughout the night, which they pay in order to be able to exit.

Several of the worst fires around the world in recent decades have been at nightclubs.

A welding accident reportedly set off a Dec. 25, 2000, fire at a club in Luoyang, China, killing 309.

At least 194 people died at an overcrowded working-class nightclub in Buenos Aires, Argentina, in 2004.

A blaze at the Lame Horse nightclub in Perm, Russia, broke out on Dec. 5, 2009, when an indoor fireworks display ignited a plastic ceiling decorated with branches, killing 152.

A nightclub fire in Rhode Island in 2003 killed 100 people after pyrotechnics used as a stage prop by the rock band Great White set ablaze cheap soundproofing foam on the walls and ceiling.

For the record, 10:55 a.m. Jan 27: A previous version of this post carried a Rio de Janeiro dateline. The post was filed from Sao Paulo.

ALSO:

More deaths of Afghan police; toll rises to 21

Key city in Mali reportedly falls to French military

Prison riot continues in Venezuela with 55 reported dead

The Associated Press contributed to this report.

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Lace 'Em Up: 4 Running Shoes Reviewed

Hitting the streets to get fit by spring? We review four new specialty sneakers for runners.

Adidas' Adizero Feather 2.0 runners are so light (barely 7 ounces) and so responsive, running in them feels more like bouncing on fluffy clouds than pounding on pavement. OK, I'm exaggerating, but I was really blown away by the light weight when I took them out on long-distance runs. So effective was the feather-weight design on a 5-mile outing, I could actually notice the reduced effort in my legs.

The shoe is topped with a barely-there breathable mesh that runs from the toes all the way back to the heel. Ventilation is therefore excellent, with a constant flow of cool air delivered directly to your piggies. And, unlike most shoes that make use of fancy, lightweight materials, they're actually quite sturdy.

These sneaks are compatible with Adidas' miCoach data reporting system and its companion apps. So if you already have a miCoach Speed_Cell sensor, just lift up the shoe's insert and pop it in (You can also attach the sensor to your laces). The sensor can be synced with your iPhone to track your speed, acceleration, distance, and pace during runs.

The only problem is that the miCoach system needs some work, including the inconsistent syncing and the iPhone app's interface. If you're used to the Nike+ app, you'll be struggling to work your way through using Adidas' lesser creation. That said, it's an add-on to the shoe and not a primary feature, so miCoach's shortcomings don't detract from the sneaker's quality.

WIRED Obscenely light at only 7 ounces. Flexible mesh upper keeps your tootsies cool and dry. Durable, despite the lightweight design. miCoach-compatible for tracking your runs. Great styling. Affordable at $115. Men's and women's versions.

TIRED If you're not into light shoes, these aren't for you. The miCoach system needs a lot of work -- it's adequate, but could be so much better.

Photos by Ariel Zambelich/Wired

Rating: 8 out of 10

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Well: Ask Well: Squats for Aging Knees

You are already doing many things right, in terms of taking care of your aging knees. In particular, it sounds as if you are keeping your weight under control. Carrying extra pounds undoubtedly strains knees and contributes to pain and eventually arthritis.

You mention weight training, too, which is also valuable. Sturdy leg muscles, particularly those at the front and back of the thighs, stabilize the knee, says Joseph Hart, an assistant professor of kinesiology and certified athletic trainer at the University of Virginia, who often works with patients with knee pain.

An easy exercise to target those muscles is the squat. Although many of us have heard that squats harm knees, the exercise is actually “quite good for the knees, if you do the squats correctly,” Dr. Hart says. Simply stand with your legs shoulder-width apart and bend your legs until your thighs are almost, but not completely, parallel to the ground. Keep your upper body straight. Don’t bend forward, he says, since that movement can strain the knees. Try to complete 20 squats, using no weight at first. When that becomes easy, Dr. Hart suggests, hold a barbell with weights attached. Or simply clutch a full milk carton, which is my cheapskate’s squats routine.

Straight leg lifts are also useful for knee health. Sit on the floor with your back straight and one leg extended and the other bent toward your chest. In this position, lift the straight leg slightly off the ground and hold for 10 seconds. Repeat 10 to 20 times and then switch legs.

You can also find other exercises that target the knees in this video, “Increasing Knee Stability.”

Of course, before starting any exercise program, consult a physician, especially, Dr. Hart says, if your knees often ache, feel stiff or emit a strange, clicking noise, which could be symptoms of arthritis.

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Unboxed: Literary History, Seen Through Big Data’s Lens

ANY list of the leading novelists of the 19th century, writing in English, would almost surely include Charles Dickens, Thomas Hardy, Herman Melville, Nathaniel Hawthorne and Mark Twain.

But they do not appear at the top of a list of the most influential writers of their time. Instead, a recent study has found, Jane Austen, author of “Pride and Prejudice, “ and Sir Walter Scott, the creator of “Ivanhoe,” had the greatest effect on other authors, in terms of writing style and themes.

These two were “the literary equivalent of Homo erectus, or, if you prefer, Adam and Eve,” Matthew L. Jockers wrote in research published last year. He based his conclusion on an analysis of 3,592 works published from 1780 to 1900. It was a lot of digging, and a computer did it.

The study, which involved statistical parsing and aggregation of thousands of novels, made other striking observations. For example, Austen’s works cluster tightly together in style and theme, while those of George Eliot (a k a Mary Ann Evans) range more broadly, and more closely resemble the patterns of male writers. Using similar criteria, Harriet Beecher Stowe was 20 years ahead of her time, said Mr. Jockers, whose research will soon be published in a book, “Macroanalysis: Digital Methods and Literary History” (University of Illinois Press).

These findings are hardly the last word. At this stage, this kind of digital analysis is mostly an intriguing sign that Big Data technology is steadily pushing beyond the Internet industry and scientific research into seemingly foreign fields like the social sciences and the humanities. The new tools of discovery provide a fresh look at culture, much as the microscope gave us a closer look at the subtleties of life and the telescope opened the way to faraway galaxies.

“Traditionally, literary history was done by studying a relative handful of texts,” says Mr. Jockers, an assistant professor of English and a researcher at the Center for Digital Research in the Humanities at the University of Nebraska. “What this technology does is let you see the big picture — the context in which a writer worked — on a scale we’ve never seen before.”

Mr. Jockers, 46, personifies the digital advance in the humanities. He received a Ph.D. in English literature from Southern Illinois University, but was also fascinated by computing and became a self-taught programmer. Before he moved to the University of Nebraska last year, he spent more than a decade at Stanford, where he was a founder of the Stanford Literary Lab, which is dedicated to the digital exploration of books.

Today, Mr. Jockers describes the tools of his trade in terms familiar to an Internet software engineer — algorithms that use machine learning and network analysis techniques. His mathematical models are tailored to identify word patterns and thematic elements in written text. The number and strength of links among novels determine influence, much the way Google ranks Web sites.

It is this ability to collect, measure and analyze data for meaningful insights that is the promise of Big Data technology. In the humanities and social sciences, the flood of new data comes from many sources including books scanned into digital form, Web sites, blog posts and social network communications.

Data-centric specialties are growing fast, giving rise to a new vocabulary. In political science, this quantitative analysis is called political methodology. In history, there is cliometrics, which applies econometrics to history. In literature, stylometry is the study of an author’s writing style, and these days it leans heavily on computing and statistical analysis. Culturomics is the umbrella term used to describe rigorous quantitative inquiries in the social sciences and humanities.

“Some call it computer science and some call it statistics, but the essence is that these algorithmic methods are increasingly part of every discipline now,” says Gary King, director of the Institute for Quantitative Social Science at Harvard.

Cultural data analysts often adapt biological analogies to describe their work. Mr. Jockers, for example, called his research presentation “Computing and Visualizing the 19th-Century Literary Genome.”

Such biological metaphors seem apt, because much of the research is a quantitative examination of words. Just as genes are the fundamental building blocks of biology, words are the raw material of ideas.

“What is critical and distinctive to human evolution is ideas, and how they evolve,” says Jean-Baptiste Michel, a postdoctoral fellow at Harvard.

Mr. Michel and another researcher, Erez Lieberman Aiden, led a project to mine the virtual book depository known as Google Books and to track the use of words over time, compare related words and even graph them.

Google cooperated and built the software for making graphs open to the public. The initial version of Google’s cultural exploration site began at the end of 2010, based on more than five million books, dating from 1500. By now, Google has scanned 20 million books, and the site is used 50 times a minute. For example, type in “women” in comparison to “men,” and you see that for centuries the number of references to men dwarfed those for women. The crossover came in 1985, with women ahead ever since.

In work published in Science magazine in 2011, Mr. Michel and the research team tapped the Google Books data to find how quickly the past fades from books. For instance, references to “1880,” which peaked in that year, fell to half by 1912, a lag of 32 years. By contrast, “1973” declined to half its peak by 1983, only 10 years later. “We are forgetting our past faster with each passing year,” the authors wrote.

JON KLEINBERG, a computer scientist at Cornell, and a group of researchers approached collective memory from a very different perspective.

This article has been revised to reflect the following correction:

Correction: January 27, 2013

An earlier version of this article misstated Matthew L. Jockers’s age. He is 46, not 48. 

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China's smog taints economy, health

BEIJING — When a thick quilt of smog enveloped swaths of China earlier this month, it set in motion a costly chain reaction for the world's No. 2 economy.

Authorities canceled flights across northern China and ordered some factories shut. Hospitals were flooded with hacking patients.

A fire in an empty furniture factory in eastern Zhejiang province went undetected for hours because the smoke was indistinguishable from the haze. In coastal Shandong province, most highways were closed for fear that low visibility would cause motorists to crash. And in Beijing, the local government urged residents to remain indoors and told construction sites to scale back activity.

Photos: Smog in China

"These are emergency measures that have the same economic impact as a strike or severe weather," said Louis Kuijs, a Hong Kong-based economist with the Royal Bank of Scotland and formerly of the World Bank. "They're very painful."

Residents in the capital have taken to mocking their famously filthy air and its attendant health hazards with the expression "Beijing cough." Meanwhile, Shanghai's Environmental Protection Bureau has introduced a cartoon mascot to communicate daily air quality on its website: a pig-tailed girl who bursts into tears when smog reaches hazardous levels.

But economists say China's smog is no joke. As air pollution continues to obscure China's cities, the cost to the nation in lost productivity and health problems is soaring. The World Bank estimates sickness and early death sapped China of $100 billion in 2009, or just under 3% of gross domestic product. China is now home to seven of the 10 most-polluted cities in the world, according to a report by the Asian Development Bank and Beijing's Tsinghua University.

A study by Greenpeace and Peking University's School of Public Health put the cost of healthcare to treat pollution-related ailments in Beijing, Shanghai, Guangzhou and Xian at more than $1 billion last year.

Beijing resident Zhang Jian takes his 2-year-old son to a doctor regularly to treat the toddler's chronic sinus infection.

"It's definitely related to the pollution," said Zhang, 35, who wore a disposable mask at an overcrowded children's hospital recently. "My son snores and his nose is blocked constantly. It's a problem because he's too young to clear his nose like adults."

The doctor's visit and treatment cost Zhang about $320 — nearly a week's pay for the IT professional.

The Beijing government says it's considering a host of emergency measures to clear the air. Among them: limiting vehicle usage, spraying building sites to reduce dust and restricting outdoor barbecue grills.

Even China's next premier, Li Keqiang, weighed in recently on the issue. "This is a problem accumulated over a long period of time, and solving the problem will also require a long time. But we need to take action."

China's smog crisis is not unlike those experienced in London and Los Angeles in the 1950s. Public outcry ultimately led to cleaner air and tougher environmental regulations.

Environmental activists hope the same happens in China. The official response in recent weeks has raised optimism that authorities will begin addressing pollution more openly.

Until recently, state media was loathe to use the word "pollution," opting instead for the euphemism "fog."

But popular pressure is building, making it harder for policymakers to ignore the foul air in many of China's largest cities.

After the staggeringly bad bout of air pollution in the middle of this month, micro-bloggers took to posting pictures of themselves online wearing masks.

Some held handwritten signs that read, "I don't want to be a human vacuum cleaner."

The phrase became the top-trending topic on the Twitter-like Sina Weibo, attracting several million hits.

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