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A tugboat on the Thames near Tower Bridge in heavy smog, 1952.
A tugboat on the Thames near Tower Bridge in heavy smog, 1952.
Fox Photos/Hulton Archive/Getty Images

The Great Smog Descended on London 65 Years Ago, and Took Almost as Long to Solve

A tugboat on the Thames near Tower Bridge in heavy smog, 1952.
A tugboat on the Thames near Tower Bridge in heavy smog, 1952.
Fox Photos/Hulton Archive/Getty Images

Heavy fogs have long been a part of life in London. In his novel Bleak House, Charles Dickens wrote:

“Fog everywhere. Fog up the river where it flows among green airs and meadows; fog down the river, where it rolls defiled among the tiers of shipping, and the waterside pollutions of a great (and dirty) city ... Chance people on the bridges peeping over the parapets into a nether sky of fog, with fog all round them, as if they were up in a balloon and hanging in the misty clouds.”

Yet a full 100 years after the celebrated author wrote those words, the city would become enveloped in a dangerous mix of fog and smoke—the likes of which they had never experienced, and were not prepared for. When the smog finally lifted, thousands of people were dead. And it would take nearly 65 years for scientists to pinpoint the reason for what has become known as The Great Smog of 1952, one of the deadliest environmental disasters in the history of the world.


5th December 1952: Morning traffic at Blackfriars, London almost at a standstill because of the blanket smog.
Don Price/Fox Photos/Getty Images

December 5, 1952 started out just like any other day in London, albeit a tremendously foggy one. But as the day wore on, it became clear that there was something different about the darkness that had descended on the city, which would hang there until December 9. People who were caught outside in the weather found themselves gasping for air, barely able to open their eyes from the sting the smoky atmosphere was delivering. Those who could see couldn’t see very far; as visibility dwindled to practically zero, pedestrians had trouble seeing their own feet while motorists were forced to abandon their vehicles.


Heavy smog in Piccadilly Circus, London, 6th December 1952.
Central Press/Hulton Archive/Getty Images

For several days, the city was essentially shut down. It all began with a cold front, which led more and more Londoners to crank up their coal stoves and gather around them for warmth. While the smoke from the city’s chimneys would normally disperse into the atmosphere, a lack of wind and an unfortunately timed anticyclone positioned over the city ended up trapping the smoke, which mixed with the fog and other pollutants, creating a lethal atmosphere.


A London bus makes its way along Fleet Street in heavy smog, 6th December 1952.
Edward Miller/Keystone/Hulton Archive/Getty Images

“You had this swirling,” funeral director Stan Cribb told NPR in 2002, “like somebody had set a load of car tires on fire.” Cribb, who at the time was working as a mortician’s assistant, was on his way to a wake with his uncle—who was also his boss—with a line of mourners behind them. According to NPR:

Neither man knew a catastrophe was brewing. They didn't know that a mass of stagnant air had just clamped a lid over London, trapping the smoke from millions of residential coal fires at ground level.

Cribb remembers being stunned by the blackness of the gathering fog. After a few minutes he couldn't see the curb from his spot behind the wheel. After a few more minutes, Tom Cribb got out and started walking in front of the hearse, to keep his nephew on the road. He carried a powerful hurricane lantern in one hand, but it was useless.

“It's like you were blind,” says Cribb.

When the fog finally lifted, reports estimated that at least 4000 people had been killed and 150,000 were hospitalized, though in the years since the total death toll has risen to approximately 12,000.


Mid-morning smog, as seen from the embankment at Blackfriars, London, 5th December 1952.
Monty Fresco/Topical Press Agency/Hulton Archive/Getty Images

Fans of the Netflix series The Crown will likely remember the 2016 episode in which Queen Elizabeth and then-Prime Minister Winston Churchill were forced to contend with the deadly event. (Of course, always aiming for accuracy, director Stephen Daldry told Entertainment Weekly that they weren’t about to use CGI to recreate The Great Smog. “We had to get a great, huge warehouse and fill it full of fog to create the great pea soup of 1952,” Daldry said. “We did it for real—CG didn’t look good enough for us.”)

Amazingly, it wasn't until last year—just a few weeks before The Crown premiered—that a global team of scientists announced that they may have finally solved the mystery of The Great Smog, and published their findings in the November 2016 issue of Proceedings of the National Academy of Sciences (PNAS).

“People have known that sulfate was a big contributor to the fog, and sulfuric acid particles were formed from sulfur dioxide released by coal burning for residential use and power plants, and other means,” said Dr. Renyi Zhang, a professor at Texas A&M University and one of the paper’s lead authors. “But how sulfur dioxide was turned into sulfuric acid was unclear. Our results showed that this process was facilitated by nitrogen dioxide, another co-product of coal burning, and occurred initially on natural fog. Another key aspect in the conversion of sulfur dioxide to sulfate is that it produces acidic particles, which subsequently inhibits this process. Natural fog contained larger particles of several tens of micrometers in size, and the acid formed was sufficiently diluted. Evaporation of those fog particles then left smaller acidic haze particles that covered the city.”


Large numbers of people using the underground system to get around London during a period of heavy smog, which hampered transport on the roads, 8th December 1952.
Keystone/Hulton Archive/Getty Images

In addition to helping to solve a troubling environmental disaster that had confounded scientists for decades, Zhang and his colleagues’ research is also helping to determine how to best deal with similar air pollution problems today, including those faced by several cities in China, which is home to some of the world’s most polluted cities.

“The difference in China is that the haze starts from much smaller nanoparticles, and the sulfate formation process is only possible with ammonia to neutralize the particles,” Zhang said. “In China, sulfur dioxide is mainly emitted by power plants, nitrogen dioxide is from power plants and automobiles, and ammonia comes from fertilizer use and automobiles. Again, the right chemical processes have to interplay for the deadly haze to occur in China. Interestingly, while the London fog was highly acidic, contemporary Chinese haze is basically neutral.”

“The government has pledged to do all it can to reduce emissions going forward, but it will take time,” he added. “We think we have helped solve the 1952 London fog mystery and also have given China some ideas of how to improve its air quality. Reduction in emissions for nitrogen oxides and ammonia is likely effective in disrupting this sulfate formation process.”


A man guiding a London bus through thick fog with a flaming torch.
Monty Fresco/Getty Images

Though it would be hard to call it a silver lining, The Great Smog of 1952 did have one positive effect: it forced the country’s government, and its people, to become more aware of the impact their actions had on their environment. On July 5, 1956, less than four years after London was enveloped in a lethal darkness, the Queen enacted the Clean Air Act 1956, which banned the burning of pollutants across the UK.

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A tugboat on the Thames near Tower Bridge in heavy smog, 1952.
Penn Vet Working Dog Center
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Stones, Bones, and Wrecks
New Program Trains Dogs to Sniff Out Art Smugglers
Penn Vet Working Dog Center
Penn Vet Working Dog Center

Soon, the dogs you see sniffing out contraband at airports may not be searching for drugs or smuggled Spanish ham. They might be looking for stolen treasures.

K-9 Artifact Finders, a new collaboration between New Hampshire-based cultural heritage law firm Red Arch and the University of Pennsylvania, is training dogs to root out stolen antiquities looted from archaeological sites and museums. The dogs would be stopping them at borders before the items can be sold elsewhere on the black market.

The illegal antiquities trade nets more than $3 billion per year around the world, and trafficking hits countries dealing with ongoing conflict, like Syria and Iraq today, particularly hard. By one estimate, around half a million artifacts were stolen from museums and archaeological sites throughout Iraq between 2003 and 2005 alone. (Famously, the craft-supply chain Hobby Lobby was fined $3 million in 2017 for buying thousands of ancient artifacts looted from Iraq.) In Syria, the Islamic State has been known to loot and sell ancient artifacts including statues, jewelry, and art to fund its operations.

But the problem spans across the world. Between 2007 and 2016, U.S. Customs and Border Control discovered more than 7800 cultural artifacts in the U.S. looted from 30 different countries.

A yellow Lab sniffs a metal cage designed to train dogs on scent detection.
Penn Vet Working Dog Center

K-9 Artifact Finders is the brainchild of Rick St. Hilaire, the executive director of Red Arch. His non-profit firm researches cultural heritage property law and preservation policy, including studying archaeological site looting and antiquities trafficking. Back in 2015, St. Hilaire was reading an article about a working dog trained to sniff out electronics that was able to find USB drives, SD cards, and other data storage devices. He wondered, if dogs could be trained to identify the scents of inorganic materials that make up electronics, could they be trained to sniff out ancient pottery?

To find out, St. Hilaire tells Mental Floss, he contacted the Penn Vet Working Dog Center, a research and training center for detection dogs. In December 2017, Red Arch, the Working Dog Center, and the Penn Museum (which is providing the artifacts to train the dogs) launched K-9 Artifact Finders, and in late January 2018, the five dogs selected for the project began their training, starting with learning the distinct smell of ancient pottery.

“Our theory is, it is a porous material that’s going to have a lot more odor than, say, a metal,” says Cindy Otto, the executive director of the Penn Vet Working Dog Center and the project’s principal investigator.

As you might imagine, museum curators may not be keen on exposing fragile ancient materials to four Labrador retrievers and a German shepherd, and the Working Dog Center didn’t want to take any risks with the Penn Museum’s priceless artifacts. So instead of letting the dogs have free rein to sniff the materials themselves, the project is using cotton balls. The researchers seal the artifacts (broken shards of Syrian pottery) in airtight bags with a cotton ball for 72 hours, then ask the dogs to find the cotton balls in the lab. They’re being trained to disregard the smell of the cotton ball itself, the smell of the bag it was stored in, and ideally, the smell of modern-day pottery, eventually being able to zero in on the smell that distinguishes ancient pottery specifically.

A dog looks out over the metal "pinhweel" training mechanism.
Penn Vet Working Dog Center

“The dogs are responding well,” Otto tells Mental Floss, explaining that the training program is at the stage of "exposing them to the odor and having them recognize it.”

The dogs involved in the project were chosen for their calm-but-curious demeanors and sensitive noses (one also works as a drug-detection dog when she’s not training on pottery). They had to be motivated enough to want to hunt down the cotton balls, but not aggressive or easily distracted.

Right now, the dogs train three days a week, and will continue to work on their pottery-detection skills for the first stage of the project, which the researchers expect will last for the next nine months. Depending on how the first phase of the training goes, the researchers hope to be able to then take the dogs out into the field to see if they can find the odor of ancient pottery in real-life situations, like in suitcases, rather than in a laboratory setting. Eventually, they also hope to train the dogs on other types of objects, and perhaps even pinpoint the chemical signatures that make artifacts smell distinct.

Pottery-sniffing dogs won’t be showing up at airport customs or on shipping docks soon, but one day, they could be as common as drug-sniffing canines. If dogs can detect low blood sugar or find a tiny USB drive hidden in a house, surely they can figure out if you’re smuggling a sculpture made thousands of years ago in your suitcase.

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A tugboat on the Thames near Tower Bridge in heavy smog, 1952.
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olympics
9 Scandals that Rocked the Figure Skating World
ERIC FEFERBERG, AFP/Getty Images
ERIC FEFERBERG, AFP/Getty Images

Don't let the ornate costumes and beautiful choreography fool you, figure skaters are no strangers to scandal. Here are nine notable ones.

1. TONYA AND NANCY.

Nancy Kerrigan and Tonya Harding
Pascal Rondeau, ALLSPORT/Getty Images

In 1994, a little club-and-run thrust the sport of figure skating into the spotlight. The assault on reigning national champion Nancy Kerrigan (and her subsequent anguished cries) at the 1994 U.S. National Figure Skating Championships in Detroit was heard round the world, as were the allegations that her main rival, Tonya Harding, may have been behind it all.

The story goes a little something like this: As America's sweetheart (Kerrigan) is preparing to compete for a spot on the U.S. Olympic team bound for Lillehammer, Norway, she gets clubbed in the knee outside the locker room after practice. Kerrigan is forced to withdraw from competition and Harding gets the gold. Details soon emerge that Harding's ex-husband, Jeff Gillooly, was behind the attack (he hired a hitman). Harding denies any knowledge or involvement, but tanks at the Olympics the following month. She then pleads guilty to hindering prosecution of Gillooly and his co-conspirators, bodyguard Shawn Eckhart and hitman Shane Stant. And then she's banned from figure skating for life.

Questions about Harding's guilt remain two decades later, and the event is still a topic of conversation today. Recently, both an ESPN 30 for 30 documentary and the Oscar-nominated film I, Tonya revisited the saga, proving we can't get enough of a little figure skating scandal.

2. HAND-PICKED FOR GOLD.

Mirai Nagasu and Ashley Wagner at the podium
Jared Wickerham, Getty Images

Usually it's the top three medalists at the U.S. Nationals that compete for America at the Winter Olympics every four years. But in 2014, gold medalist Gracie Gold (no pun intended), silver medalist Polina Edmunds, and ... "pewter" medalist Ashley Wagner were destined for Sochi.

What about the bronze medalist, you ask? Mirai Nagasu, despite out-skating Wagner by a landslide in Boston and despite being the only skater with prior Olympic experience (she placed fourth at Vancouver in 2010) had to watch it all on television. The decision by the country's governing body of figure skating (United States Figure Skating Association, or USFS) deeply divided the skating community as to whether it was the right choice to pass over Nagasu in favor of Wagner, who hadn't skated so great, and it put a global spotlight on the selection process.

In reality, the athletes that we send to the Olympics are not chosen solely on their performance at Nationals—it's one of many criteria taken into consideration, including performance in international competition over the previous year, difficulty of each skater's technical elements, and, to some degree, their marketability to a world audience. This has happened before to other skaters—most notably Michelle Kwan was relegated to being an alternate in 1994 after Nancy Kerrigan was granted a medical bye after the leg-clubbing heard round the world. Nagasu had the right to appeal the decision, and was encouraged to do so by mobs of angry skating fans, but she elected not to.

3. SALT LAKE CITY, 2002.

Pairs skaters Jamie Sale and David Pelletier of Canada and Elena Berezhnaya and Anton Sikharulidze of Russia perform in the figure skating exhibition during the Salt Lake City Winter Olympic Games at the Salt Lake Ice Center in Salt Lake City, Utah
Brian Bahr, Getty Images

Objectively, this scandal rocked the skating world the hardest, because the end result was a shattering of the competitive sport's very structure. When Canadian pairs team Jamie Sale and David Pelletier found themselves in second place after a flawless freeskate at the Winter Olympics in Salt Lake, something wasn't right. The Russian team of Elena Berezhnaya and Anton Sikharulidze placed first, despite a technically flawed performance.

An investigation into the result revealed that judges had conspired to fix the results of the pairs and dance events—a French judge admitted to being pressured to vote for the Russian pair in exchange for a boost for the French dance team (who won that event). In the end, both pairs teams were awarded a gold medal, and the entire system of judging figure skating competition was thrown out and rebuilt.

4. AGENT OF STYLE.

Jackson Haines was an American figure skater in the mid-1800s who had some crazy ideas about the sport. He had this absolutely ludicrous notion of skating to music (music!), waltzing on ice, as well as incorporating balletic movements, athletic jumps, and spins into competition. His brand new style of skating was in complete contrast to the rigid, traditional, and formal (read: awkward) standard of tracing figure-eights into the ice. Needless to say, it was not well received by the skating world in America, so he was forced to take his talents to the Old World.

His new “international style” did eventually catch on around the globe, and Haines is now hailed as the father of modern figure skating. He also invented the sit spin, a technical element now required in almost every level and discipline of the sport.

5. LADIES LAST.

In 1902, competitive figure skating was a gentlemen's pursuit. Ladies simply didn't compete by themselves on the world stage (though they did compete in pairs events). But a British skater named Madge Syers flouted that standard, entering the World Figure Skating Championships in 1902. She ruffled a lot of feathers, but was ultimately allowed to compete and beat the pants off every man save one, earning the silver medal.

Her actions sparked a controversy that spurred the International Skating Union to create a separate competitive world event for women in 1906. Madge went on to win that twice, and became Olympic champion at the 1908 summer games [PDF] in London—the first “winter” Olympics weren't held until 1924 in France, several years after Madge died in 1917.

6. AGENT OF STYLE, PART 2.

A picture of Norwegian figure skater Sonja Henie
Keystone/Getty Images

Norwegian skater Sonja Henie was the darling of the figure skating world in the first half of the 20th century. The flirtatious blonde was a three-time Olympic champion, a movie star, and the role model of countless aspiring skaters. She brought sexy back to skating—or rather, introduced it. She was the first skater to wear scandalously short skirts and white skates. Prior to her bold fashion choices, ladies wore black skates and long, conservative skirts. During WWII, a fabric shortage hiked up the skirts even further than Henie's typical length, and the ladies of figure skating have never looked back.

7. TOO SEXY FOR HER SKATES.

Katarina Witt displaying her gold medal
DANIEL JANIN, AFP/Getty Images

A buxom young beauty from the former Democratic German Republic dominated ladies figure skating in the mid- to late 1980s. A two-time Olympic champion, and one of the most decorated female skaters in history, Katarina Witt was just too sexy for her shirt—she tended to wear scandalously revealing costumes (one of which resulted in a wardrobe malfunction during a show), and was criticized for attempting to flirt with the judges to earn higher scores.

The ISU put the kibosh on the controversial outfits soon afterward, inserting a rule that all competitive female skaters “must not give the effect of excessive nudity inappropriate for an athletic sport.” The outrage forced Witt to add some fabric to her competitive outfits in the late '80s. But 10 years later she took it all off, posing naked for a 1998 issue of Playboy.

8. MORE COSTUME CONTROVERSY.

For the 2010 competitive year, the ISU's annual theme for the original dance segment (since defunct and replaced by the “short dance”) was “country/folk.” That meant competitors had to create a routine that explored some aspect of it, in both music and costume as well as in maneuvers. The top Russian pair chose to emulate Aboriginal tribal dancing in their program, decked in full bodysuits adorned with their interpretation of Aboriginal body paint (and a loincloth).

Their debut performance at the European Championships drew heavy criticism from Aboriginal groups in both Australia and Canada, who were greatly offended by the inaccuracy of the costumes and the routine. The Russian pair, Oksana Domnina and Maxim Shabalin, were quick to dial down the costumes and dial up the accuracy in time for the Winter Olympics in Vancouver, but the judges were not impressed. They ended up with the bronze, ending decades of Russian dominance in the discipline. (With the glaring exception of 2002, of course.)

9. IN MEMORIAM.

While not a scandal, this event bears mentioning because it has rocked the figure skating world arguably more than anything else. In February of 1961, the American figure skating team boarded a flight to Belgium from New York, en route to the World Championships in Prague. The plane went down mysteriously (cause still questioned today) as it tried to land in Brussels, killing all 72 passengers. America's top skaters and coaches had been aboard, including nine-time U.S. Champion and Olympic bronze medalist-turned-coach Maribel Vinson-Owen and her daughter Laurence Owen, a 16-year-old who had been heavily favored to win the ladies event that year.

The ISU canceled the competition upon the news of the crash and the United States lost its long-held dominance in the sport for almost a decade. The United States Figure Skating Association (USFS) soon after established a memorial fund that helped support the skating careers of competitors in need of financial assistance, including future Olympic champions like Scott Hamilton and Peggy Fleming.

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