Daily Mirror Library/Mirrorpix/Getty Images
- In 1952, London was blanketed under a dark cloud of human-made air pollution known as the Great Smog.
- The smog killed about 12,000 people, along with a dozen cattle who choked on the poisonous air.
- The UK later enacted the Clean Air Act in 1956, banning coal in homes and in many factories in populated areas.
Over the course of five days in 1952, the city of London was blanketed in a thick layer of poisonous air that would result in the deaths of thousands.
The Great Smog of 1952 killed 12,000 people. At the time, people didn’t realize how toxic the air was because they were used to the smog.
Even today, the tragedy is not particularly well remembered. There are no monuments in London, nor any days of observation.
But the impact of those five days prompted a change in how the world saw air pollution. It led to the creation of the Clean Air Act of 1956, the world’s first nationwide legislation regulating pollution.
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On December 5, 1952, Londoners woke to a crisp, wintry Friday morning. To warm themselves, the city’s 8 million residents did what they always did — they lit fires. At the same time, power stations and workplaces across the city burned coal.
SSPL/Getty Images
Sources: History.com, The Conversation
Back then, power stations were a part of the city. Smoke chugging from industrial chimneys was a symbol to be proud of — it meant people were at work.
Daily Mirror/Mirrorpix/Mirrorpix via Getty Images
Source: The Guardian
Smoke and smog were so familiar to London that it had a number of nicknames, including “pea soup fog” because of the yellowish or green tint, or as the famous author Charles Dickens called it, “London ivy.”
Woods and Reed/Daily Mirror/Mirrorpix/Getty Images
Source: The Guardian
Normally, smoke would rise from London, cool in the atmosphere and then get blown out to sea. But on this particular day, a high pressure system of warm air blanketed the city, trapping cool air below where it mixed with the coal smoke to make smog.
Bettmann/Getty Images
Sources: The Standard, National Geographic
By the afternoon, the sky had begun to turn a yellow-brown. Funeral director Stan Cribb described the scene to NPR, saying “you had this swirling, like somebody had set a load of car tires on fire.”
Monty Fresco/Topical Press Agency/Hulton Archive/Getty Images
Sources: History.com, NPR
At first, people weren’t overly concerned. Heavy smog wasn’t unusual in London. Since the Industrial Revolution in the late 1700s, London has had a problem with smog.
Central Press/Hulton Archive/Getty Images
Source: The Standard
What no one realized was that for the next five days, the city would be trapped under an increasingly thick blanket of smog since there was no wind to blow it away.
Don Price/Fox Photos/Getty Images
Source: National Geographic
To make matters worse, temperatures fell, so everyone burned even more coal. Millions of residential fires were adding thousands of tons of smoke to the dark cloud that just kept getting thicker.
Daily Herald Archive/SSPL/Getty Images
Sources: NPR, National Geographic
The atmosphere also trapped sulfur dioxide, a gas which is created from burning coal. This caused the haze over the city, and when it mixed with the damp air, it became akin to acid rain.
M. Fresco/Topical Press Agency/Getty Images
Source: National Geographic
Soon, it was almost impossible to see in some areas of the city. School children were told to stay home, boats on the River Thames stopped running, and concerts were cancelled.
Phil Dye/Daily Mirror/Mirrorpix/Getty Images
Sources: New York Times, History.com
Cars were abandoned on the streets while London’s double decker buses had to use their high beams in the middle of the day. Eventually all public transport, other than those underground, came to a standstill.
PA Images via Getty Images
Sources: New York Times, History.com, NPR
The smog got so dense that people were even unable to see their feet.
PA Images via Getty Images
Sources: History.com, NPR
Cattle reportedly choked to death on the smog. Here, a cow wears a mask made of sacking that was soaked in whisky and water to keep it protected from the smog.
Reg Speller/Fox Photos/Hulton Archive/Getty Images
Source: History.com
Birds couldn’t see in the air above and died flying into buildings.
Bettmann/Getty Images
Source: History.com
When people ventured outside, they found the footpaths had become slick with grease. When they got home, their faces were covered in dirt. They looked like they had just left a coal mine.
Bettmann/Getty Images
Source: History.com
And yet, as bad as it was, people didn’t quite realize how serious it was for their health.
Fox Photos/Hulton Archive/Getty Images
Sources: New York Times, History.com
“There was no sense of drama or emergency,” Dr. David Bates, who worked at London’s St. Bartholomew’s Hospital at the time, told The New York Times.
Keystone/Hulton Archive/Getty Images
”It was only when the registrar general published the mortality figures three weeks later that everybody realized that there had, in fact, been a major disaster,” he said.
Sources: New York Times, NPR, History.com, BBC
By December 6, 1952, about 500 people had died. The smog was especially lethal to smokers, people with respiratory conditions, and the elderly and young.
Daily Mirror Library/Mirrorpix/Getty Images
People were dying four times as much as usual during the smog and the hospitals couldn’t keep up with the influx of patients.
Sources: New York Times, NPR, History.com, BBC
Ambulances weren’t operating, so the sick had to either walk or ride the underground to the hospitals.
Keystone/Hulton Archive/Getty Images
Sources: NPR, History.com
Maureen Scholes, a nurse at the Royal London Hospital, was only in her twenties at the time. She told NPR that, even as a healthy young woman, she had to sleep upright just to breathe.
Keystone/Getty Images
While she was at work, the smog got so bad inside the hospital she couldn’t see down to the end of the corridor.
But without any warning, on December 9, 1952, a westerly wind blew the smog out to the North Sea. The Great Smog was over almost as fast as it began.
Daniel Farson/Picture Post/Getty Images
At this point, it was estimated that about 4,000 people had died. Florists were out of flowers, and undertakers were out of coffins.
Sources: History.com, Time, BBC
Over the following months, the number of people who died would increase to what experts estimate to be around another 8,000. After realizing the danger to their health, people began to wear masks in the smog.
Monty Fresco/Getty Images
Sources: History.com, New York Times
Unfortunately, smog continued to occasionally blanket London, including another deadly fog a decade later, in 1962, which killed 750 people. But none were as deadly as the Great Smog of 1952.
Daily Herald/Mirrorpix/Mirrorpix/Getty Images
Source: History.com
The government helped bring an end to deadly smogs by enacting legislation called the Clean Air Act in 1956, which banned coal in homes and in many factories in populated areas.
John Chillingworth/Picture Post/Hulton Archive/Getty Images
It was the first air pollution act in the world that focused on nationwide pollution.
The US would later follow suit in 1970 with its Clean Air Act.
Source: NPR
But it was also in part because people were no longer willing to put up with the risk. They had begun to realize they didn’t need to live in cities where it was dangerous to breathe.
Carl Sutton/Picture Post/Hulton Archive/Getty Images
As Gary Fuller, an air pollution scientist at King’s College London, told The Times, polluted air can be just as lethal as any human-made disaster.
He thought the Great Smog needed to be remembered more.
“These 12,000 people have no memorial,” he said. “Where else would 12,000 people die and not be remembered? We have memorials to the Blitz and all these other things. We should remember this, too.”
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