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Showing posts sorted by relevance for query CHERNOBYL. Sort by date Show all posts

Saturday, February 26, 2022


Chernobyl's Radiation Spiked 20 Times Above Usual Levels as Russian Forces Arrive


BEN TURNER, LIVE SCIENCE
25 FEBRUARY 2022

The Chernobyl nuclear power plant and its surrounding area are showing increased radiation levels after heavy fighting between Ukrainian and Russian troops in the region, Ukrainian officials said Friday (Feb. 25)

Online data from the Chernobyl exclusion zone's automated radiation-monitoring system shows that gamma radiation has increased 20 times above usual levels at multiple observation points, which officials from the Ukrainian nuclear agency attributed to radioactive dust thrown up by the movement of heavy military equipment in the area.

The defunct Chernobyl nuclear power plant has been under occupation by attacking Russian soldiers since Thursday (Feb. 24) after Russian president Vladimir Putin launched a full-scale invasion of Ukraine in the early hours of the morning.

Workers at the facility, stationed there to monitor and maintain radiation levels within safe bounds, have been taken hostage by Russian troops, according to Anna Kovalenko, a Ukrainian military expert.

"The station staff is being held hostage. This threatens the security of not only Ukraine but also a significant part of Europe," Kovalenko wrote on Facebook.

White House press secretary Jen Psaki said in a news briefing on Thursday (Feb. 24) that the Biden administration was "outraged" by reports of Russian troops holding Chernobyl plant staff against their will and demanded their release.

She warned that the action "could upend the routine civil service efforts required to maintain and protect the nuclear waste facilities."

As one of the most radioactive places in the world, large parts of the Chernobyl exclusion zone have been closed off since the disastrous meltdown of Ukraine's Chernobyl nuclear power plant in 1986.

In that year, two enormous explosions inside the plant's reactor flipped its 2,000-ton (1,800 metric tons) lid like a coin, blanketing the surrounding 1,000-square-mile (2,600 square kilometers) with radioactive dust and reactor chunks.

Following evacuation and the dousing of the nuclear fire – which cost many firefighters their lives – the reactor was sealed off and the area deemed uninhabitable by humans for the next 24,000 years.

Heavy fighting around the plant on Thursday (Feb. 24) led to concerns that stray munitions could accidentally pierce the exploded reactor's two layers of protection – consisting of a new, outer safe-confinement structure and an inner concrete sarcophagus – and release the deadly radioactive fallout trapped inside.

In a contradictory statement, Igor Konashenkov, the spokesman for the Russian Defense Ministry, said that radiation around the plant was within normal levels and that Russian forces were working with the facilities' staff to ensure the area's safety.

Oleksiy Arestovych, an advisor to Ukrainian president Volodymyr Zelenskyy, believes that the Chernobyl site was seized as part of a "possible blackmail" tactic against the West.

"Chernobyl has been seized and I think they will blackmail the West. The President's Office is preparing a response to possible blackmail through Chernobyl," Arestovych said in a statement.

The site, which is just 60 miles (97 km) north of the Ukrainian capital Kyiv, lies on a direct invasion route between Kyiv and the Russian forces' northern entry point to Ukraine at the Belarusian border.

Claire Corkhill, a professor of nuclear material degradation at the University of Sheffield in the UK, wrote on Twitter that the gamma radiation around the Chernoybl plant "looks to have increased by around 20 times compared with a few days ago."

However, caution should be taken "not to over-interpret at this stage," she said.

"This appears to be based on a single data point," Corkhill added in a separate tweet. "What is intriguing is that the level of radiation has increased mostly around the main routes in and out of the Chernobyl exclusion zone, as well as the reactor. This would tend to suggest that increased movement of people or vehicles may have disturbed radioactive dust."

The highly radioactive fuel inside the Chernobyl reactor is buried deep beneath the defunct plant and is unlikely to be released unless the reactor is directly targeted, Corkhill said.

Fighting around the plant was just a small part of a much wider ongoing Russian invasion of Ukraine, the biggest on a European nation since World War II.

As Russian forces close in on Kyiv, the Ukrainian Ministry of Defense wrote on its Twitter page, urging citizens to stay at home, inform the Ukrainian military about the movements of Russian military equipment, and make Molotov cocktails in preparation for urban warfare.


Chernobyl: Why did Russian troops take control of infamous nuclear disaster site?

Graeme Massie and Zoe Tidman
Fri, February 25, 2022

It is the site of the world’s worst nuclear disaster, and now Ukrainian officials say that the area surrounding the Chernobyl nuclear reactor is under Russian control.

The reactor at Chernobyl infamously melted down in April 1986 during a test, covering much of Europe in a radioactive cloud.

At that time, Ukraine remained a part of the Soviet Union, and to this day a highly protected 20-mile exclusion zone had existed around the site, which entombs a highly dangerous amount of nuclear material.

So why would Vladimir Putin have prioritised it for capture and control by his advancing troops?

Tracey German, a professor in conflict and security at the King’s Russia Institute, told The Independent this could be down to the site’s location.

“It lies on a direct route from Belarus down to Kyiv and would therefore be passed by Russian forces invading from the north,” she said. “If it wasn’t in this location, I don’t think Russian forces would be looking to secure it.”

The defunct nuclear site is situated in northern Ukraine just several miles inside the border and around 80 miles north of the embattled country’s capital.

“Chernobyl is the shortest route from Russia to Kyiv. The facility is not the goal,” tweeted CNN analyst and national security expert Juliette Kayyem.

Ukraine observers also say that Chernobyl sits on the western side of the Pripyat river, which merges with the Dneiper river just north of Kiev. The site therefore becomes strategically important for the western flank of Russian troops if they eventually circle the city.

Dr Ross Peel, a researcher at the Department of War Studies at King’s College London’s also suggested the threat posed by war could also play a role.

“I’d suggest the main motivation is they want to get the site secured. It’s not generating power at all and has no value that I can think of – I think the main motivation is they want to keep it safe from anything that might breach it,” he told The Independent.

“Prolonged fighting in the area only creates danger of the containment being breached and radiation escaping, so they want to prevent anything happening to it.”

But Ukraine’s nuclear agency and interior ministry said on Friday they were recording increased radiation levels from the site of the defunct nuclear power plant.

Experts at the state nuclear agency said the change was due to the movement of heavy military equipment in the area lifting radioactive dust into the air.

“It is not critical for Kyiv for the time being, but we are monitoring,” the interior ministry said.

Other observers have said that Russia wanted to gain control of the Chernobyl power substation, which provides energy to Belarus and parts of western Russia.

Shane Partlow, who used to work at the US embassy in Kyiv, said this could be the purpose of holding the Chernobyl area, as the substation was “critical to electrical supply in the region, including Belarus and Russia”.

White House is 'outraged' over reports that staff at Chernobyl have been taken hostage by Russian forces

Kelsey Vlamis
Thu, February 24, 2022

Ukrainian servicemen take part in a joint tactical and special
 exercises in a ghost city of Pripyat, near Chernobyl Nuclear 
Power Plant on February 4, 2022.
Sergei Supinsky/AFP/Getty Images

Russian forces took over the Chernobyl nuclear plant in Ukraine on Thursday.

Press secretary Jen Psaki called reports the plant's staff was taken hostage "incredibly alarming."

It's unclear how the Russian takeover will affect efforts to maintain radioactivity at the site.

Press secretary Jen Psaki said the White House is outraged over reports from Ukrainian officials that staff at the Chernobyl nuclear plant in Ukraine have been taken hostage by Russian troops.


Russian forces took over the remnants of Chernobyl earlier on Thursday during the country's invasion of Ukraine. The move indicated Russia is likely to assault Ukraine's capital city, Kyiv, which is located just south of Chernobyl, the site of one of the worst nuclear disasters in history.

"We're outraged by credible reports that Russian soldiers are currently holding the staff of the Chernobyl facility hostage," Psaki said during a press briefing on Thursday afternoon, adding "we condemn it and we request their release."


Psaki said the situation at Chernobyl was not clear but that the hostage taking was "incredibly alarming and greatly concerning," adding it could hurt efforts to maintain the facility, which is dangerously contaminated with radioactivity as a result of the 1986 nuclear disaster.

Earlier on Thursday, an adviser to the head of the plant said: "After a fierce battle, Ukrainian control over the Chernobyl site was lost. The condition of the former Chernobyl nuclear power plant, confinement, and nuclear waste storage facilities is unknown."

Russia's takeover sparked concerns that it would jeopardize the decades-long efforts to contain the nuclear disaster, including a billion-dollar investment in a containment dome in 2016. It's unclear how the dome would hold up to combat damage, Insider's Brent D. Griffiths reported.

Wednesday, March 09, 2022

UH OH 😨
'Insanity Not to Allow This': Calls for Ceasefire to Repair Chernobyl Power Supply

Ukraine's foreign minister said a ceasefire in the area would "allow repair crews to restore electricity supply" 
to the Chernobyl plant "as soon as possible."


A picture taken on April 13, 2021 shows the giant protective dome built over the sarcophagus covering the destroyed fourth reactor of the Chernobyl Nuclear Power Plant ahead of the upcoming 35th anniversary of the Chernobyl nuclear disaster
.
 (Photo: Sergei Supinsky/AFP via Getty Images)


JAKE JOHNSON
COMMON DREAMS
March 9, 2022

This is a developing news story... Check back for possible updates...

Ukrainian authorities warned Wednesday that radioactive material could leak into the atmosphere after the decommissioned Chernobyl nuclear plant was reportedly disconnected from the power grid by Russian forces, raising the risk that spent nuclear fuel stored at the site may not cool properly.

"Because of military actions of Russian occupiers, the nuclear power plant in Chernobyl was fully disconnected from the power grid," Ukrenergo, Ukraine's state-owned power grid operator, said in a statement.

Ukrenergo added in a Facebook post that emergency diesel generators have been activated in response to the electricity shut-off, but noted the fuel would last for just 48 hours.

Energoatom, Ukraine's national nuclear energy firm, cautioned Wednesday that without adequate electricity, "the temperature in the [spent fuel] holding pools will increase" and "release of radioactive substances into the environment may occur."

Mykhailo Podolyak, an adviser to the Ukrainian president, characterized the state of the Chernobyl plant as "an extremely dangerous situation."

In a social media post, the International Atomic Energy Agency (IAEA) wrote that Wednesday's development "violates a key safety pillar on ensuring uninterrupted power supply" to the Chernobyl plant.

But the agency added that it "sees no critical impact on safety at the moment," explaining that the heat load of the spent fuel storage pool and the "volume of cooling water" at the facility are "sufficient for effective heat removal without the need for electrical supply."

Russian military forces quickly seized control of the Chernobyl plant, the site of the 1986 nuclear catastrophe, soon after they invaded Ukraine late last month, heightening fears of a nuclear disaster stemming from possible damage to the facility.

In a pair of tweets Wednesday, Ukrainian Foreign Minister Dmytro Kuleba called for an immediate ceasefire in the area to "allow repair crews to restore electricity supply" to the Chernobyl plant "as soon as possible."


"Spare diesel generators will power the Chernobyl nuclear power plant and its facilities for 48 hours," Kuleba wrote. "Then the cooling system of the spent nuclear fuel storage will be shut down, which will threaten the leakage of radiation. Russia's barbaric war threatens the whole of Europe. Putin must stop it immediately."

The advocacy group Beyond Nuclear said it would be "insanity not to allow this," referring to necessary repairs to the Chernobyl power supply.

"The fighting must stop," the group added. "Everyone will be affected."

Officials fear possible radiation leak after Chernobyl nuclear plant loses power in Ukraine

Losing power means that systems in the Chernobyl plant that regulate radiation could fail and allow harmful radiation to escape into the atmosphere.
Photo by Carl Montgomery/Wikimedia Commons

March 9 (UPI) -- Officials in Ukraine said Wednesday that Russian shelling has damaged a high-voltage power line to the Chernobyl Nuclear Power Station, which is under Russian control, and that radiation could escape if it's not repaired soon.

Authorities said the damage to the power line was caused by the "occupiers" and urged Moscow to call a halt to the fighting in the area to fix it. The Chernobyl plant is located about 70 miles northwest of Kyiv.

Russian forces have slowly been making advances in some parts of Ukraine and none at all in other areas that are guarded by Ukrainian troops and civilians. A new cease-fire that began on Wednesday was called to allow thousands of Ukrainians to flee the fighting, but it doesn't offer the necessary protection to fix the Chernobyl power line.

Losing power means that systems in the plant that regulate radiation could fail and allow harmful radiation to escape into the atmosphere.


A sign near the Chernobyl nuclear power plant in Ukraine warns of possible radiation exposure stemming from the 1986 explosion at the facility, which partially melted the core in reactor No. 4. 
File Photo by Sergey Starostenko/UPI

"About 20,000 spent fuel assemblies are stored in the spent nuclear fuel storage facility-1. They need constant cooling. Which is possible only if there is electricity," Ukraine's State Service of Special Communications said in a tweet Wednesday.

"If it is not there, the pumps will not cool. As a result, the temperature in the holding pools will increase. After that evaporation will occur, that will lead to nuclear discharge. The wind can transfer the radioactive cloud to other regions of Ukraine, Belarus, Russia and Europe. In addition, there is no ventilation inside the facility."

Officials also said that personnel at the plant will be exposed to a "dangerous dose of radiation."

Ukrainian officials said that there's also an increased risk of fire due to the outage, as extinguishing and suppression systems depend on electricity to function.

Making matters worse, officials said on Tuesday that systems that monitor nuclear waste at Chernobyl had stopped transmitting data.

"I'm deeply concerned about the difficult and stressful situation facing staff at the Chernobyl nuclear plant and the potential risks this entails for nuclear safety," Rafael Grossi, head of the International Atomic Energy Agency, said. "I call on the forces in effective control of the site to urgently facilitate the safe rotation of personnel there."

The IAEA said in a tweet earlier Tuesday, however, that it didn't foresee a "critical impact on safety" from the power outage.

More than 200 workers at the Chernobyl plant have been trapped there since the start of the war as no one is being allowed to replace them. The IAEA on Wednesday called on the international community to facilitate a staff rotation.

The Chernobyl nuclear plant was the site of a 1986 partial core meltdown after an explosion in its reactor No. 4. It was one of the worst nuclear disasters in history.


Friday, March 03, 2023

Meet the thriving stray dogs of Chernobyl

Sarah Knapton
Mar 04 2023

The nuclear ghost town of Pripyat, 2 kilometres from the Chernobyl Nuclear Power Plant, in a video marking the town's 50th anniversary in 2021.

Living amid the fallout of the world’s worst nuclear disaster may not seem like a sensible lifestyle choice, but the dogs of Chernobyl may have evolved to make it work, a study suggested.

Scientists have found that strays living in the exclusion zone of the Ukrainian disaster have developed distinct DNA and behaviour from other canines.

Since the nuclear catastrophe took place in April 1986, the area surrounding the nuclear power plant has largely been abandoned by humans.

But although radioactive contamination devastated wildlife populations there, some animals survived and continued to breed – including feral dogs, some of whom may have descended from domestic pets.

The team found that the strays had formed into packs, like wild dogs and wolves, but the groups were living close together, a behaviour not seen in undomesticated animals.

The dogs have been monitored by the Chernobyl Dog Research Initiative since 2017, and a new study of blood samples taken by the project team has shown that the animals were genetically different from other canines.

Now the team are planning to study the new genetic traits to see if any of the mutations is helping them to survive in the radiation zone.

Discovering how mammals evolve to live in harsh radiation environments could bring important insights into how to predict
 cancer in humans, or protect astronauts in the deadly radioactive environment of space.


SEAN GALLUP/GETTY IMAGES
Some animals, including dogs, survived and continued to breed long after Chernobyl was sealed off to humans.


Dr Elaine Ostrander, a geneticist from the National Human Genome Research Institute, part of the US National Institutes of Health (Nih), said: “We don’t yet know what, if any, genetic differences might allow dogs to survive in one versus another environment.

“Looking for changes in the DNA that have helped one versus the other population survive is the long-term goal of the study and one we are working towards now.

“We think that is an important experiment because those changes, if identified, would be helpful for understanding early events in cancer, help guide using therapies for diseases that are motivated by radiation exposure, and would suggest ways in which we can better protect ourselves from both accidental and natural radiation exposure.

“For instance, we know that space is a high radiation environment, and information from this study could help scientists design ideal protection for those spending significant time in space, as space exploration continues to expand.”

DIMITAR DILKOFF/GETTY IMAGES
Scientists hope that the genetic discovery could offer insights in preventing cancer in humans.

The Chernobyl disaster began on April 26 1986 with the explosion of reactor number four at the nuclear power plant causing an updraft of radioactivity which spread across Europe.

Two people died immediately and 29 within the coming days of acute radiation syndrome, while the United Nations estimated some 4000 more died from the fallout.

Many women also aborted their babies for fear they would be affected by radiation poisoning.


Some 300,000 people were evacuated from their homes and, in the aftermath, a 1600-square kilometre exclusion zone was set up around the site.

DIMITAR DILKOFF/GETTY IMAGES
The stray dogs have been monitored by the Chernobyl Dog Research Initiative since 1997.

However, in recent years, researchers have found that closing off the land to humans has allowed wildlife to flourish, with the area now a haven for lynx, bison, brown bear, wolves, boar and deer as well as 60 rare plant species.

The Chernobyl Exclusion Zone currently represents the third-largest nature reserve in mainland Europe and is often considered an accidental experiment in rewilding.

Previous studies showed that exposure to radiation speeds up the genetic mutation rate among plants, with some species evolving new chemistry that makes them more resistant to radiation damage and protects their DNA.

Scientists have pointed out that in the past when early plants were evolving, levels of natural radiation on Earth were far higher than now, so species may be able to switch on dormant traits to survive.

However, it was unknown whether the same protective adaptations would be seen in larger animals.

The new study was based on 302 free-roaming dogs living in the exclusion zone, which were found to have different genetic make-ups depending on how much radiation they were exposed to.

The Nih team is now planning to study the genetic changes to find out whether they are helping the dogs to survive.

The research was published in the journal Science Advances

READ MORE:


The Chernobyl Nuclear Disaster Created Genetically Mutant Dogs


Maddie Bender
Fri, March 3, 2023

Photo Illustration by Luis G. Rendon/The Daily Beast/Pixabay

Roughly 350,000 people evacuated during the 1986 disaster at the Chernobyl Nuclear Power Plant in 1986, leaving their lives and belongings behind to flee the worst nuclear disaster in history. Facets of residents’ lives left behind but often unmentioned are their pets, which evacuees were forbidden to retrieve. Despite the high levels of radiation in the Chernobyl Exclusion Zone, many of these animals survived, and their descendants can be found in and around the region today.

Prancer, one of these dogs, got her name from a dance she does whenever she greets Tim Mousseau’s research team. Mousseau, a biology researcher at the University of South Carolina, has studied the effects of radiation on living organisms in sites like Chernobyl and Fukushima for decades. Usually, however, his subjects are a lot smaller, potentially a result of the extremely harsh conditions created by nuclear radiation.

“These are dogs. You can't help but love them and develop relationships with them,” he told The Daily Beast. “We think about bringing them home with us every time we go.”

Dog Genes Hold More Secrets About Humans Than You Think

Even in conditions that drastically limit their lifespan—Mousseau said most of the Chernobyl canines only live to three—the dogs have found a way to thrive. Locals and an increasing number of dark tourists feed the dogs resulting in a surge in the canines’ population that have driven nonprofits and researchers to regularly provide veterinary care, and spay and neuter as many dogs as they can. Over the course of three years, Mousseau has collected hundreds of blood samples from the dogs as part of these efforts.

The dogs’ blood contained an incredibly rare opportunity: a glimpse into how life prevails even under unnaturally harsh conditions. When Mousseau came to National Human Genome Research Institute geneticist Elaine Ostrander to analyze nearly 300 of these blood samples, she wasn’t about to let the chance slip by.

“I said, ‘Me, me, me, me, me,’” she told The Daily Beast. “It's such an extraordinary opportunity, and it does have implications for human health and biology.”

The Mystery of Chernobyl’s Black Frogs

Mousseau and Ostrander’s team published genetic sequencing results from the Chernobyl dogs on March 3 in the journal Science Advances. According to the authors, the study represents “the first genetic analysis of domestic dogs affected by a nuclear disaster,” providing a baseline to measure the impact of prolonged radiation exposure on an animal’s genetic health.

The radiation in Chernobyl City and near the power plant breaks the pooches’ DNA strands. Their cells try to repair it, but errors often occur. DNA gets deleted, spontaneously added, or switched around willy-nilly. Understanding how the Chernobyl dogs are able to survive in spite of this constant assault could inform a field like cancer treatment, since incorrectly repaired DNA is often found in cancer cells, Ostrander said.

“These dogs are surviving generation after generation, they’re fertile, they're carrying out all their bodily functions, and they even have behavioral relationships with people in the area—they're doing all the dog stuff they're supposed to be doing,” Ostrander said. “What's allowed them to overcome [the radiation]? From the viewpoint of someone at the National Institutes of Health, we really care about that.”

Russian Troops Left Mines and Fires Around Chernobyl in ‘Nightmare’ Scenario

During visits to the Exclusion Zone, Mousseau and others have noticed dogs living both in Chernobyl City and in and around the nuclear power plant—the latter of which is striking, given the area’s high, ongoing levels of radioactive contamination. But it was not known how closely these two populations were related, and additionally, how genetically similar they were to dogs in a nearby village.

As it turned out, both were genetically distinct—from a nearby village dog population and from each other. The next step, which the researchers are already diving into, is to start to isolate the genetic regions that make the Chernobyl dogs different. It’s all speculation at the moment, but Mousseau and Ostrandar both have theories.

For his part, Mousseau has studied an assortment of flora and fauna in radiation zones and found that some species of birds have safety mechanisms in their genes that protect them from the worst effects of the radiation. Might the dogs living near the power plant have such molecular failsafes, too?

Roving Packs of Robot Dogs Are Coming to the Moon

Now that the researchers have a baseline for these dogs, they are able to isolate genetic differences that aren’t just due to the quirks of the populations. Any disparate finding could improve the dogs’ ability to survive in their environment. For instance, if the Chernobyl dogs have genes encoding shorter fur than others nearby, it might mean they don’t hold onto as much radioactive dust in their coats. Or, if they have more genes relating to processing scents, it might mean the dogs can smell without putting their noses to the radioactive soil.

“In terms of looking at the genome, this is one of the most exciting projects ever,” Ostrander said.

But Russia’s invasion of Ukraine has complicated the research efforts: The last time Mousseau visited the region, the Crimea Bridge was bombed. Currently, his team sends about 800 kilos of food to the dogs every week, and the nonprofit Clean Futures Fund supports on-the-ground care for the animals.

“We hope that this research will shine a light on the situation in Ukraine to a broader audience,” Mousseau said. “We should all be concerned about the care of animals, even if they're stuck in a place like Chernobyl, in a war zone.”

Can the dogs of Chernobyl teach us new tricks on survival?

Scientists are studying hundreds of dogs at the Chernobyl disaster site that have managed to survive in extremely harsh conditions

By LAURA UNGAR - 
AP Science Writer
Mar 3, 2023 

This photo taken by Timothy Mousseau shows dogs in the Chernobyl area of Ukraine on Oct. 3, 2022. More than 35 years after the world's worst nuclear accident, the dogs of Chernobyl roam among decaying, abandoned buildings in and around the closed plant – somehow still able to find food, breed and survive.


This photo provided by Timothy Mousseau in Feb. 2023 shows a dog in the Chernobyl area of Ukraine. More than 35 years after the world's worst nuclear accident, the dogs of Chernobyl roam among decaying, abandoned buildings in and around the closed plant – somehow still able to find food, breed and survive.

More than 35 years after the world's worst nuclear accident, the dogs of Chernobyl roam among decaying, abandoned buildings in and around the closed plant – somehow still able to find food, breed and survive.

Scientists hope that studying these dogs can teach humans new tricks about how to live in the harshest, most degraded environments, too.

They published the first of what they hope will be many genetics studies on Friday in the journal Science Advances, focusing on 302 free-roaming dogs living in an officially designated “exclusion zone” around the disaster site. They identified populations whose differing levels of radiation exposure may have made them genetically distinct from one another and other dogs worldwide.

“We've had this golden opportunity” to lay the groundwork for answering a crucial question: “How do you survive in a hostile environment like this for 15 generations?” said geneticist Elaine Ostrander of the National Human Genome Research Institute, one of the study’s many autho

Fellow author Tim Mousseau, professor of biological sciences at the University of South Carolina, said the dogs “provide an incredible tool to look at the impacts of this kind of a setting” on mammals overall.

Chernobyl’s environment is singularly brutal. On April 26, 1986, an explosion and fire at the Ukraine power plant caused radioactive fallout to spew into the atmosphere. Thirty workers were killed in the immediate aftermath while the long-term death toll from radiation poisoning is estimated to eventually number in the thousands.

Researchers say most of the dogs they are studying appear to be descendants of pets that residents were forced to leave behind when they evacuated the area.

Mousseau has been working in the Chernobyl region since the late 1990s and began collecting blood from the dogs around 2017. Some of the dogs live in the power plant, a dystopian, industrial setting. Others are about 9 miles (15 kilometers) or 28 miles (45 kilometers) away.

At first, Ostrander said, they thought the dogs might have intermingled so much over time that they’d be much the same. But through DNA, they could readily identify dogs living in areas of high, low and medium levels of radiation exposure.

“That was a huge milestone for us," said Ostrander. “And what’s surprising is we can even identify families” – about 15 different ones.

Now researchers can begin to look for alterations in the DNA.

“We can compare them and we can say: OK, what’s different, what’s changed, what’s mutated, what’s evolved, what helps you, what hurts you at the DNA level?” Ostrander said. This will involve separating non-consequential DNA changes from purposeful ones.

Scientists said the research could have wide applications, providing insights about how animals and humans can live now and in the future in regions of the world under “continuous environmental assault” – and in the high-radiation environment of space.

Dr. Kari Ekenstedt, a veterinarian who teaches at Purdue University and was not involved in the study, said it's a first step toward answering important questions about how constant exposure to higher levels of radiation affects large mammals. For example, she said, “Is it going to be changing their genomes at a rapid rate?”

Researchers have already started on the follow-up research, which will mean more time with the dogs at the site about 60 miles (100 kilometers) from Kyiv. Mousseau said he and his colleagues were there most recently last October and didn’t see any war-related activity. Mousseau said the team has grown close to some dogs, naming one Prancer because she excitedly prances around when she sees people.

“Even though they’re wild, they still very much enjoy human interaction," he said, “Especially when there’s food involved.” 

___

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Friday, February 25, 2022

Nuclear watchdog expresses concern over Chernobyl plant

IAEA appeals for ‘maximum restraint’ to avoid any action that may put nuclear facilities at risk amid Russia-Ukraine conflict


News Service
February 25, 2022

File photo

The International Atomic Energy Agency (IAEA) expressed “grave concern” Thursday over the situation at the Chernobyl nuclear power plant amid Russia's military intervention in Ukraine.

The IAEA “is following the situation in Ukraine with grave concern and is appealing for maximum restraint to avoid any action that may put the country’s nuclear facilities at risk,” said Rafael Mariano Grossi, the director-general of the Vienna-based agency, in a statement.

“In line with its mandate, the IAEA is closely monitoring developments in Ukraine with a special focus on the safety and security of its nuclear power plants and other nuclear-related facilities,” said the statement.

The IAEA’s statement came after Ukraine announced that Kyiv had lost control of the Chernobyl nuclear plant in the country’s north after a fierce battle with Russian forces.

Ukraine’s regulatory body had earlier informed the IAEA that it is maintaining communications with the country’s operational nuclear power plants, which it said are operating safely and securely.

“Regarding the situation at the Chernobyl Nuclear Power Plant, Ukraine has informed the IAEA that ‘unidentified armed forces’ have taken control of all facilities of the State Specialized Enterprise Chernobyl NPP, located within the Exclusion Zone,” the statement added.

According to the statement, the Ukraine regulatory body said there had been no casualties or destruction at the industrial site.

Grossi highlighted that it is of “vital importance that the safe and secure operations of the nuclear facilities in that zone should not be affected or disrupted in any way.”

Recalling a 2009 decision adopted by the IAEA, he said “any armed attack on and threat against nuclear facilities devoted to peaceful purposes constitutes a violation of the principles of the United Nations Charter, international law and the Statute of the Agency.”

On Thursday, the US condemned reports that Russian forces had taken staff of the Chernobyl nuclear waste storage facility in Ukraine hostage and called for their release.

In 1986, an accident known as the world's worst nuclear disaster occurred at the fourth reactor in the Chernobyl nuclear power plant, located 16 kilometers (10 miles) from the city of Pripyat -- which was built in the 1970s to house workers at the plant -- in the north of the Ukrainian Soviet Socialist Republic.

Russian troops enter Kyiv after taking control of Chernobyl nuclear power plant, says Ukrainian President

India Today Web Desk Kyiv
February 25, 2022 


Ukrainian President Volodymyr Zelenskiy holds a joint news conference with Polish President Andrzej Duda and Lithuanian President Gitanas Nauseda in Kyiv, Ukraine on February 23, 2022
. (REUTERS)

Russian troops are closing in on the seat of Ukrainian power after taking control of the Chernobyl nuclear power plant, Ukranian President Volodymyr Zelenskyy said on Friday.

Zelenskyy also warned that the Russian armed forces would seize Kyiv within 96 hours, bringing a 'new Iron Curtain' down on Europe, the Daily Mail reported.

Earlier in the day, Ukrainian Prime Minister Denys Shmyhal had said that the Chernobyl exclusion zone and all the structures of the Chernobyl nuclear power plant have been captured by the Russian armed groups.

Some Russian military massed in the Chernobyl "exclusion zone" before crossing into Ukraine early on Thursday, a Russian security source had said, adding that Russia wants to control the Chernobyl nuclear reactor to signal NATO not to interfere militarily.

Russia's defense ministry also confirmed it's in full control of Chernobyl, saying that radiation levels are normal, BNO news reported.

The nuclear plant - the site of the world's worst nuclear accident - lies 130 kilometers north of Kyiv, Ukraine's capital city.

On Thursday, the Ukrainian Foreign Ministry tweeted saying that a Russian attack on Ukraine could “cause another ecological disaster.”

Amid Russian military operations, the Ukrainian President is creating an anti-Russia coalition against President Vladimir Putin.

Meanwhile, the Ukranian army provided 10,000 assault rifles to locals to defend the country, Kyiv media reported on Friday.


CNN reporter explains the likely reason Russia wants to seize control of Chernobyl site
RAW STORY
February 24, 2022

‘We have a chance to show the truth’:
 Inside Chernobyl's 'death zone' 30 years later

On Thursday's edition of CNN's "The Lead," correspondent Matthew Chance explained the likely reason why Russian forces are moving on the site of the Chernobyl nuclear power plant — the location of the worst civilian nuclear disaster in history.

"Do we have any idea why Russia might want control of Chernobyl?" asked anchor Jake Tapper. "Is it just another piece of territory, or is there something more to it than that?"

"I've been they thinking about that a little bit and it's difficult to say. But the obvious answer is the geographical location of it," said Chance. "It's not far from Kyiv, but it's also on the border of Belarus, so it's a bit of open territory which even though it's contaminated terribly of course still with radioactive material, it is territory that gives access to Ukraine from the north, from Belarus. There was also a lot of speculation in the Russian media particularly before this invasion happened that Chernobyl could be a potentially dangerous place where an ecological disaster could be sparked."

"Ukrainians have been expressing their concern about that as well," continued Chance. "That's why I said it was so terrifying that it's a potentially dangerous military confrontation around that nuclear reactor, which is currently housed in a sarcophagus made out of concrete to try to limit any further damage that could be caused by it. Of course, if it does become the focus of a strong military confrontation between these two armies, that could kick up all sorts of horrific radioactive material and, you know, cause that massive catastrophe to repeat itself all over again. I think probably it's fair to say neither side wants that."

Watch below:
Matthew Chance explains why Russia is seizing the Chernobyl site


Chernobyl no-go zone targeted as Russia invades Ukraine
By JIM HEINTZ

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 A Soviet-era top secret object Duga, an over-the-horizon radar system once used as part of the Soviet missile defense early-warning radar network, seen behind a radioactivity sign in Chernobyl, Ukraine, on Nov. 22, 2018. Among the most worrying developments on an already shocking day, as Russia invaded Ukraine on Thursday, was warfare at the Chernobyl nuclear plant, where radioactivity is still leaking from history's worst nuclear disaster 36 years ago. (AP Photo/Efrem Lukatsky, File)


KYIV, Ukraine (AP) — It was among the most worrying developments on an already shocking day, as Russia invaded Ukraine on Thursday: warfare at the Chernobyl nuclear plant, where radioactivity is still leaking from history’s worst nuclear disaster 36 years ago.

Russian forces took control over the site after a fierce battle with Ukrainian national guards protecting the decommissioned plant, Ukrainian presidential adviser Mykhailo Podolyak told The Associated Press. The condition of the plant’s facilities, a confinement shelter and a repository for nuclear waste is unknown, he said.

An official familiar with current assessments said Russian shelling hit a radioactive waste repository at Chernobyl, and an increase in radiation levels was reported. The increase could not be immediately corroborated.

A senior American intelligence official said the U.S. believes Russian forces at Chernobyl were aiming to push to Kyiv, about 130 kilometers (80 miles) south of the plant, to try to link with other Russian forces throughout Ukraine. The officials were not authorized to be publicly named discussing the sensitive matter.

The Chernobyl Exclusion Zone, a 2,600-square-kilometer (1,000-square-mile) zone of forest surrounding the shuttered plant, lies between the Belarus-Ukraine border and the Ukrainian capital.

Ukrainian President Volodymyr Zelenskyy said Ukrainian officers fought to defend it, “so that the tragedy of 1986 will not be repeated.” He called it a “declaration of war against the whole of Europe.”

Adviser Podolyak said that after an “absolutely senseless attack ... it is impossible to say that the Chernobyl nuclear power plant is safe.” He warned that Russian authorities could blame Ukraine for damage to the site or stage provocations from there.

Ukrainian Interior Ministry adviser Anton Herashenko warned that any attack on the waste repository could send radioactive dust over “the territory of Ukraine, Belarus and countries of the EU.”

Russian officials, who have revealed little of their operations in Ukraine and not revealed their goals, did not publicly comment on the battle.

The International Atomic Energy Agency said it is following the situation in Ukraine “with grave concern” and appealed for maximum restraint to avoid any action that may put Ukraine’s nuclear facilities at risk.

Rafael Mariano Grossi, the IAEA’s general director, said Ukraine has informed the Vienna-based agency that ”unidentified armed forces” have taken control of all facilities at the plant and that there had been no casualties or destruction at the industrial site. Grossi said it is “of vital importance that the safe and secure operations of the nuclear facilities in that zone should not be affected or disrupted in any way.″

Edwin Lyman, director of nuclear power safety at the Union of Concerned Scientists in Washington, said, “I can’t imagine how it would be in Russia’s interest to allow any facilities at Chernobyl to be damaged.”

In an interview, Lyman said he is most worried about spent fuel stored at the site, which has not been active since 2000. If the power to cooling pumps is disrupted or fuel-storage tanks are damaged, the results could be catastrophic, he said.

Reactor No. 4 at the power plant exploded and caught fire deep in the night on April 26, 1986, shattering the building and spewing radioactive material high into the sky.

Soviet authorities made the catastrophe even worse by failing to tell the public what had happened, angering European governments and the Soviet people. The 2 million residents of Kyiv weren’t informed despite the fallout danger, and the world learned of the disaster only after heightened radiation was detected in Sweden.

The building containing the exploded reactor was covered in 2017 by an enormous shelter aimed at containing radiation still leaking from the accident. Robots inside the shelter work to dismantle the destroyed reactor and gather up the radioactive waste.

It’s expected to take until 2064 to finish dismantling the reactors. Ukraine decided to use the deserted zone as the site for its centralized storage facility for spent fuel from the country’s other remaining nuclear power plants.

Germany’s vice chancellor and economy minister, Robert Habeck, told The Associated Press that Russia would not need to obtain nuclear material from Chernobyl if it wanted to use it for any purpose, because it has enough such material of its own.

___

Associated Press writers Nomaan Merchant and Matthew Daly in Washington, James LaPorta in Boca Raton, Florida, Angela Charlton in Paris and Frank Jordans in Berlin contributed.

Friday, April 23, 2021

Air Chernobyl? Tourists get chance to fly over nuclear disaster zone

By Sergiy Karazy and Margaryta Chornokondratenko
REUTERS 
4/23/2021
Reuters/GLEB GARANICH A view shows the Chernobyl Nuclear Power Plant during a tour to the Chernobyl zone

KYIV (Reuters) - Ukrainian nuclear agency worker Viktor Kozlov received an unusual birthday gift from his wife Maryna: tickets for a 90 minute flight over Chernobyl, site of the world's worst nuclear disaster.
© Reuters/GLEB GARANICH People take a tour to the Chernobyl zone

The trip gives passengers a bird's eye view of the abandoned buildings in the ghost town of Pripyat that once housed nuclear workers, and the massive domed structure now covering the reactor that exploded on April 26, 1986.

On the flight, run by Ukraine International Airlines, passengers craned their necks, pointed and took pictures on their phones of the site that has become one of the country's major tourist destinations.

The disaster, which struck during a botched safety test at the plant 110 km (70 miles) north of the capital Kyiv, forced tens of thousands of people to abandon the area permanently, leaving wildlife behind to thrive in the contaminated zone.
© Reuters/GLEB GARANICH People take a tour to the Chernobyl zone

"I read a lot about the Chernobyl accident and I know every second of the disaster timeline," Kozlov, whose interest in the industry was prompted by having grown up in another town with a nuclear plant, said during the flight.
© Reuters/GLEB GARANICH People take a tour to the Chernobyl zone

Gallery: Ukraine eyes UNESCO status for abandoned Chernobyl wasteland (Reuters)
Air Chernobyl? Tourists get chance to fly over nuclear disaster zone (msn.com)













Children's beds are seen in a kindergarten near the Chernobyl Nuclear Power Plant in the abandoned city of Pripyat, Ukraine, April 12. REUTERS/Gleb Gar
24 SLIDES © Reut
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Children's beds are seen in a kindergarten near the Chernobyl Nuclear Power Plant in the abandoned city of Pripyat, Ukraine, April 12. REUTERS/Gleb Garanich

"I was surprised by the nature around the plant. It looks so pure, nature won over a human here," he added.

Thirty-one plant workers and firemen died in the immediate aftermath of the disaster, mostly from acute radiation sickness. Thousands more later succumbed to radiation-related illnesses such as cancer, although the total death toll and long-term health effects remain a subject of intense debate.

As Ukraine marks the 35th anniversary of the accident, the former Soviet republic will apply for Chernobyl to receive UNESCO World Heritage status to attract more visitors and funding to develop the area.

Before the coronavirus pandemic, the site became more popular with tourists thanks to the HBO series "Chernobyl" in 2019.

For Pilot Yevhen Nechyporenko, the flights over Chernobyl reminded him of his childhood when he spent summer holidays near the area.

"It attracts people like a magnet. Also by looking at these places from above, you imagine yourself there," he said in the cockpit.
© Reuters/GLEB GARANICH A view shows the Chernobyl Nuclear Power Plant during a tour to the Chernobyl zone

"It is very interesting to look closely into every detail of the area, into what is happening there, what changes took place around the plant and in the town, how the nature is developing and taking over."

(Editing by Matthias Williams and Alison Williams)

Friday, November 24, 2023

Classified: The Secret Radiation Files


 
 NOVEMBER 24, 2023
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The Chornobyl nuclear disaster contaminated almost all of Belarus. (Pictured:Belarus-minsk-serabranka_Vnon/Wikimedia Commons)

In 1987, a year after the Chernobyl accident, the US Health Physics Society met in Columbia, Maryland. Health physicists are scientists who are responsible for radiological protection at nuclear power plants, nuclear weapons plants, and hospitals. They are called on in cases of nuclear accidents. The conference’s keynote speaker came from the Department of Energy (DOE); the title of his talk drew on a sports analogy: “Radiation: The Offense and the Defense.” Switching metaphors to geopolitics, the speaker announced to the hall of nuclear professionals that his talk amounted to “the party line.” The biggest threat to nuclear industries, he told the gathered professionals, was not more disasters like Chernobyl and Three Mile Island but lawsuits.

After the address, lawyers from the Department of Justice (DOJ) met in break-out groups with the health physicists to prepare them to serve as “expert witnesses” against claimants suing the US government for alleged health problems due to exposure from radio­activity issued in the production and testing of nuclear weapons during the Cold War. That’s right: the DOE and the DOJ were preparing private citizens to defend the US government and its corporate contractors as they ostensi­bly served as “objective” scientific experts in US courts.

Health physics is an extremely important field for our everyday lives. Health physicists set standards for radiation protection and evaluate damage after nuclear emergencies. They determine where radiologists set the dial for CT scans and X-rays. They calculate how radioactive our food can be (and our food is often radioactive) and determine acceptable levels of radiation in our workplaces, environments, bodies of water, and air. Despite its importance, as it is practiced inside university labs and government organizations, health physics is far from an independent field engaged in the objective, open-ended pursuit of knowledge.

Compromised Science

The field of health physics emerged inside the Manhat­tan Project along with the development of the world’s first nuclear bombs. From the United States, it migrated abroad. For the past seventy-five years, the vast major­ity of health physicists have been employed in national nuclear agencies or in universities with research under­written by national nuclear agencies. As much as we in the academy like to make distinctions between apoliti­cal, academic research and politicized paid research outside the academy, during the Cold War those distinc­tions hardly made sense. From the end of World War II until the 1970s, federal grants paid for 70 percent of university research. The largest federal donors were the Department of Defense, the US Atomic Energy Agency, and a dozen federal security agencies.

Historian Peter Galison estimated in 2004 that the volume of classified research surpassed open literature in American libraries by five to ten times. Put another way, for every article published by American academics in open journals, five to ten articles were filed in sealed repositories available only to the 4 million Americans with security clear­ances. Often, the same researchers penned both open and classified work. Health physics benefited from the largesse of the Pentagon and the Atomic Energy Com­mission, which produced nuclear weapons for US arse­nals. Correspondingly, the field suffered from a closed circle of knowledge that has had a major impact on our abilities to assess and respond to both nuclear emergen­cies and quotidian radioactive contamination.

Tracking the production of knowledge in the field of health physics shows how the effective renunciation of facts has played a major role in this branch of science. More generally, it demonstrates how the boundary between open and classified research is critical yet rarely acknowledged. The response of international health physicists to the Chernobyl disaster, which occurred in Soviet Ukraine in April 1986, shows heavily politicized science in action. History reveals that the official, feder­ally sponsored cultivation of “alternative facts” is not new but has deep roots in the twentieth century.

Chernobyl came at an unfortunate time for nuclear professionals. As the Cold War creaked to an end, law­suits abounded. In the 1980s, Marshall Islanders—their homes blasted in nuclear tests, their bodies subjected to classified medical study by scientists contracted by the Atomic Energy Agency—went to court. In Utah and Nevada, those who lived downwind from the Nevada Test Site were lining up for lawsuits. Meanwhile, the Metropolitan Edison Company in Pennsylvania faced lawsuits from plaintiffs living near the Three Mile Island nuclear power plant, which suffered a partial meltdown in 1979. In the late 1980s, reporters and congressional investigators began to inquire into US government agencies’ wide-scale engagement in human radiation experiments, which included exposing tens of thou­sands of soldiers to nuclear blasts. These legal actions and investigations constituted an existential threat for nuclear industries, civilian and military. Chernobyl cast into doubt industry statements that nuclear energy is safer than coal, than flying, than living in high-altitude Denver. If another nuclear accident were to occur, UN International Atomic Energy Agency (IAEA) head Hans Blix told the IAEA board of governors a few weeks after the Chernobyl explosions, “I fear the general public will no longer believe any contention that the risk of a severe accident was so small as to be almost negligible.”

Because radioactivity is insensible, society relies on scientists and their technologies to count ionizing radiation and analyze its effect on biological organ­isms. In 1986, the three-decades-old Life Span Study of Japanese bomb survivors served in the West as the “gold standard” for radiation exposure. It became the chief referent in lawsuits over health damage from radioactive contaminants. The Life Span Study started in 1950. In subsequent decades, American and Japanese scientists followed bomb survivors and their offspring, looking for possible health effects from exposure to the bomb blasts. By 1986, the group had detected a signifi­cant increase in a handful of cancers and, surprisingly, no birth defects, though geneticists had expected them.

The Life Span Study told scientists a great deal about the effects of a single exposure of a terrifically large blast of radiation lasting less than a second but little about the impact of chronic, low doses of radioactivity—the kind of exposures served up by the Chernobyl accident and related to the ongoing lawsuits in the United States. At the time, like now, scientists confessed they knew very little about the effects of low doses of radioactivity on human health. For that reason, after Chernobyl, leading scientific administrators in UN agencies and national health agencies called for using the Chernobyl accident to carry out a long-term, large-scale epidemiological study to determine the effects of low doses of radiation on human health. Unfortunately, those requests went nowhere at first because Soviet officials asserted that health damage was limited to the two dozen firefighters who died from acute radiation poisoning. They insisted that they were monitoring the health of neighboring residents and found no change in their health. Soviet spokespeople told the international community that they did not need help, thank you very much.

Silos of Knowledge

Health physics, a moribund field in the West and a secretive field in the Soviet Union, suddenly appeared in the spotlight after the Chernobyl accident. Archival records show that two silos of knowledge about the ef­fects of low doses of radiation on human health emerged in the wake of the Chernobyl accident. Western health physicists oriented around the Life Span Study, while Soviet health physicists worked from specialized, closed clinics producing literature that mostly was filed in clas­sified libraries. A few months after the accident, Western health physicists— extrapolating from Hiroshima—an­nounced that, given the reported levels of radioactivity released in the accident, they expected to see no detect­able health problems as a result. From the Soviet side, spokespeople gave vague assurances, but scientists were silent. For security reasons, Soviet health physicists did not take the podium. Anyway, they were busy.

Behind the Iron Curtain, Soviet scientists near the accident quietly got to work figuring out the extent of the damage. A few days after the accident, Anatolii Romanenko, minister of health in Ukraine, called up medical brigades to examine evacuees and villagers in contaminated areas. Several thousand doctors and nurses fanned out across the Soviet countryside. The effort would have been unimaginable outside of a socialist state highly skilled in the art of mass mobilization. In Ukraine alone, doctors examined seventy thousand children and over one hundred thousand adults in the summer following the accident. People judged to have received high doses were sent to hospitals in Kiev, Leningrad, and Moscow. By late May, the number of hospitalized citizens rose to the tens of thousands.

For the subsequent five years, the last years of the Soviet Union, doctors and medical researchers in Ukraine and Belarus tracked health statistics in contaminated regions. They reported the results in classified documents each year. Their reports show that after the accident, frequencies of health problems in five major disease categories grew annually. Soviet doctors did not have access to ambient measurements of radioactivity in the environment and the food chain because that information was classified, so doctors did what they had long done in the Soviet Union. They used their patients’ bodies as biological barometers to determine doses of radioactivity. Medical practitioners counted white and red blood cells, held radiation detec­tion counters to the thyroids of their patients, measured blood pressure, and scanned urine. They looked for chromosomal damage in blood cells and counts of radioactivity in tooth enamel. Using these biomarkers, Soviet doctors determined the doses of radioactivity their patients had encountered externally and ingested internally. Doctors calculated the range of radioactive isotopes lodged in their patients’ bodies. A KGB general who ran his own KGB clinic in Kiev for KGB agents and their families counted twelve different radioactive isotopes in organs and tissue of his patients.

In 1986, in neighboring Belarus, which received the majority of Chernobyl fallout, scientists at the Belarusian Academy of Science set up case-control studies to track the impact in real time on the health of children and pregnant women, two populations judged to be especially vulnerable. The academy also commissioned dozens of studies of radioactive contamination in the atmosphere, soils, plants, agricultural products, and live­stock. They drew on a body of knowledge that Soviet scientists had clandestinely developed over four decades in clinics stationed near secret nuclear installations that had suffered a large number of accidents and spills of radioactive effluents during the Cold War rush to produce weapons. In April 1989, the respected president of the Belarusian Academy of Science sent to Moscow a twenty-five-page report that reflected the renaissance of science in the fields of radioecology and radiobiol­ogy that had flourished in the contaminated regions as a result of the Chernobyl disaster. Evgenii Konoplia laid out what his Institute of Radiobiology had found.

Almost the entire territory of Belarus had been con­taminated, Konoplia wrote, except for a few northern regions. The contamination had a mosaic complexion, with radiation levels differing ten to twenty times in areas a few kilometers apart. Even long distances from the plant, they found areas of between fifty and one hun­dred curies per square kilometer in the topsoil (no more than one curie was considered safe). Analyzing corpses of people who died between 1986 and 1988 in the most affected provinces, Belarusian scientists learned that radioactive cesium and ruthenium accumulated in the spleen and muscles, strontium in bones, and plutonium in lungs, liver, and kidneys. They found, unnervingly, no dependent relationship between the levels of accumulated isotopes in bodies and radioactive contamination in territories. All corpses in the Gomel Province had nearly identical accumulations, and bodies in Vitebsk, with far lower counts of radiation, still had surprisingly elevated levels of radioactive isotopes. The scientists attributed this puzzle to the migration of radioactive contamination along food pathways. The study showed that most of the exposure people received came in the form of internal exposures from ingesting radioactivity, not from exter­nal, ambient gamma rays in the environment.

Medical examinations of people in contaminated regions showed a significant increase in the general number of chromosomal mutations in newborns, and the frequency of birth defects in southern Belarus was found to be significantly higher than the control. In terms of general health, Konoplia reported, adults showed an increase in diseases of the circulatory system, hyperten­sion, coronary illness, heart attacks, and myocardial problems, plus a rise in respiratory diseases. Children showed an elevation in cases of chronic respiratory and neurological disease, anemia, and disorders of the thyroid, adenoids, and lymph nodes. Konoplia acknowl­edged that the rise in rates of disease diagnosis might be related to increased medical attention, but, he pointed out, the rates had risen steadily in each of three years. The Belarusian teams had found objective disorders in bodily functions (immune system, blood-forming system, and endocrine glands), and they had discovered similar changes in experimental animals. Since doctors in con­taminated regions had abandoned their jobs, hospitals were operating at half staff, so there was most likely an underdetection of disease rather than overdetection. All of this led the Belarusian team to suspect that radioactive exposures were a factor.

Soviet ministers in public health suppressed this information, which was easy to do as all Chernobyl health data were under security restrictions until June 1989. Once censorship was lifted, health minis­ters from both Belarus and Ukraine started to voice their concerns abroad, using their seat at the United Nations as a platform to declare that they had a public health disaster on their hands. They asked, over the heads of Moscow leaders, for international aid.

The rogue diplomacy of Ukraine and Belarus was a real problem for the Kremlin. Since 1986, Soviet officials had asserted that Chernobyl fallout was contained and citizens’ exposures were not harm­ful. Having spent billions of rubles on cleanup, they sought in 1989 to close the Chernobyl chapter and move on. Moscow leaders, faced with this rebellion from scientists and crowds in Ukraine and Belarus, called for help. Realizing that the prominent Soviet spokespeople for the Chernobyl disaster had lost the public’s trust, they asked the UN World Health Organization (WHO), concerned with issues of public safety and health, to assess the safety of residents liv­ing in contaminated territories.

The WHO sent three nuclear experts to contami­nated areas in 1989. They were followed by Soviet reporters and TV cameras. After a ten-day tour, the experts supported the Moscow party line: the situa­tion was under control, and residents’ doses were too low to expect to detect health problems in the future. The WHO consultants even stated that the Soviet government could safely double or triple the official permissible dose. Before they left, they chastised the Belarusian researchers for their shoddy science.

No one took this ten-day “independent assessment” seriously. The WHO experts merely looked like shills for Moscow. In October 1989, Moscow leaders tried again, inviting the IAEA for a second evaluation of the accident’s environmental and health impact. IAEA administrator Abel Gonzalez, worried that his agency’s mission to promote peaceful uses of nuclear energy would make it look like an interested party, created the International Chernobyl Project in order to enlist the participation of other apparently disinterested UN agencies. Gonzalez’s office recruited two hundred vol­unteer scientists to take a “snapshot” of the Chernobyl situation and come to conclusions by the end of 1990.

American scientist Fred Mettler, who had spent most of his career working in labs of the Atomic Energy Commission, led the International Chernobyl Project’s health group. He quickly drew up a protocol for a case-control study. The protocol was not peer reviewed. UN consultants randomly selected eight hundred cases living in contaminated areas and eight hundred controls living nearby. Mettler reported that his group “looked for everything: cancers, disease, birth defects.” He had no baseline of research on which to evaluate the data his teams collected as there were no publicly available long-term studies of people exposed to chronic low doses. Nor did he have Soviet doctors’ measurements of radioactivity in bodies of their patients. KGB intel­ligence considered these records to be Soviet intellectual property and did not share them with the visiting experts. In fact, four computers with that dose infor­mation were stolen, floppy discs with them, during the summer of the IAEA experts’ first visits.

For Mettler and other IAEA experts, the lack of real-time measurements of their study subjects’ expo­sures was not an obstacle. In fact, it was similar to the Hiroshima and Nagasaki studies, which had begun five years after the bombing. A study of Nevada Test Site “downwinders” had also begun many years after expo­sure. Health physicists had a long-standing practice of retroactively estimating doses to patients by taking measurements, not in bodies as Soviet doctors did, but in environments. With ambient levels of radioactiv­ity, IAEA consultants computed doses for populations based on estimates of average volume and types of food consumed and time spent outdoors—information derived from asking people about their consumption and daily practices in the past. Once they had a “dose reconstruction,” an estimate of the doses people prob­ably received, they then calculated how those doses affected health by extrapolating health consequences from Hiroshima to Chernobyl. The substitution treated the large external (gamma) X-ray dose at Hiroshima as a universal exposure comparable to the slow, low-level, internal exposures of Chernobyl survivors.

But Chernobyl doses, Belarusian scientists protested, differed greatly from those of bomb survivors. Much of the danger, they informed visiting IAEA scientists, came not from external gamma rays but from ingested radioactive isotopes, some in the form of inhaled hot particles, which they estimated caused damage at several times lower doses than external exposures. The IAEA researchers, they pointed out, took as fact statements by Moscow officials that all people in contaminated areas ate clean food shipped in from elsewhere. As Belarusian researchers had already found, corpses in relatively clean Vitbesk Province showed nearly the same levels of incorporated radioactivity as those of corpses in contaminated provinces of south­ern Belarus, because food products in circulation were radioactive. Belarusian scientists puzzled over what kind of results the UN study of a small sample of 1,600 people would deliver. According to charts from the Jap­anese Life Span Study, the protocol for the Chernobyl study would find only catastrophic health results, not the wide range of acute and subacute health problems they had reported in studies carried out in Belarus.

While UN teams performed thyroid exams on children selected for their case-control study, Soviet doctors handed to IAEA consultants biopsies of an unexpectedly large number of children with thyroid cancer, twenty to thirty times higher than usual. That, indeed, was a catastrophic result. UN researchers doubted the cancers could be real. The doses were too low compared to Hiroshima, they kept repeating. The cancers came too soon. The latency period was from five to ten years. Four years after the accident, they calculated, was too early to see cancers, even among children, whose cells multiply quickly.

Soviet researchers in Ukraine and Belarus were confused. They did not hold the Japanese Life Span Study as their gold standard; they hardly knew that material. Instead of computing doses and conse­quences, Soviet researchers encouraged visiting experts to use patients’ bodies and bodily material evidence such as biopsies to determine both doses and damage.

But that wasn’t how radiation epidemiology was done in the West. Health physicists were operating on the understanding that if high doses from the atomic bombs caused some damage to the population of bomb survivors, much lower Chernobyl doses would deliver far lower rates of illness, increases of cancers so minimal, they computed, they would be impossible to detect above the average cancer rates.

In fact, with the Life Span Study as a referent and an estimate of ambient radiation levels, Western researchers did not need to do a study; doses were so low, they concluded, they would find no effects. A study done so soon after exposure would produce little useful knowledge. So why do one at all? Clarence Lushbaugh, a doctor with the Atomic Energy Commission–funded Oak Ridge Associated Universities, wrote privately to a colleague in 1980 admitting that these kinds of low-dose radiation studies were largely for public consumption: “Both [nuclear] workers and their management need to be assured that a career involving exposures to low levels of nuclear radiation is not hazardous to one’s health. . . . The results of such a study [of American nuclear workers] could be the best counter-measure to the antinuclear propaganda that continues to flood all of us. . . . They would be immensely useful in resolving workmen’s claims.” It fell to the Department of Energy, the successor to the Atomic Energy Commission, to fund these studies, Lushbaugh continued, because if competitors such as the nuclear workers’ labor union did their own stud­ies, they could come up with damning results: “A study designed to show the transgressions of management will usually succeed.” Lushbaugh was pointing to the fact that the parameters of dose reconstructions were so flexible that they could easily serve political purposes.

The IAEA served up a study just like the one Lushbaugh proposed, one designed to placate anxious publics in the Soviet Union, Europe, and North Amer­ica. The short eighteen-month examination concluded in the rushed publication of the International Cher­nobyl Project Final Report in spring 1991. The report estimated that rates of disease, though higher than expected, were the same in both the control and the exposed groups. They attributed the excess of health problems to stress caused by exposure to radiation, or what scientists called “radiophobia.” The only health outcome UN investigators saw was a possible detect­able future bump in childhood thyroid cancer.

What of the thyroid cancers that had already appeared, Belarusian and Ukrainian researchers asked? What about the biopsies they gave the UN teams to verify? In the transcripts of the 1991 meeting on the International Chernobyl Project report, Mettler acknowledged that he had taken the biopsies home to his lab in New Mexico and they had “checked out.” Despite that “fact,” the final report’s text stated only that there had been “rumors” of pediatric thyroid cancer that were “anecdotal in nature.”

The UN consultants had verified a major, twentyfold increase in pediatric thyroid cancer in a university lab, and then called that proof “anecdotal.” Why did they do that? The UN consultants were volunteers; they worked at universities or government labs. They were indepen­dent of the UN hierarchy, beholden to no one. Perhaps the health physicists denied evidence they had themselves verified because it did not match their predictive models from the Japanese Life Span Study. This could be a case of slow science, where it takes a long time for researchers to shift from one paradigm to another. But there is more to the story. The Japanese Life Span Study was in the open literature, but it was far from the only research into human exposures to radioactive contaminants.

Researchers on the UN team who had security clearances had access to classified studies that showed that 79 percent of children in the Marshall Islands exposed to American bomb blasts under the age of ten had developed thyroid cancer. Seventy-nine percent of several hundred children had thyroid cancer when the background rate was one in a million. That was a clear precedent against which to judge the Chernobyl cancers. In 1991, however, the Marshall Islands studies were still classified. So too was the vast work the US government had commissioned related to radiation experiments on human subjects. Researchers with high-level clearances had known for decades about swift-moving pediatric thyroid cancers in contaminated landscapes, but they could not discuss them in public.

The Chernobyl case is not merely a matter of the slowly shifting gears of scientific advancement at work. Rather, the case shows how the divide between clas­sified and unclassified research places scientists in a dangerously compromised position. Scientists with clearances could not acknowledge the Marshall Islands and other human-subjects research without placing themselves in jeopardy of federal charges for disclosure of state secrets. Russian scientists in Moscow were in the same position. French and British scientists also may have had to negotiate the divide between open and closed research in their own institutional worlds.

And then there were the lawsuits. The opening vignette of this essay showed how DOE and DOJ lawyers worried about the landslide of post Cold War lawsuits and worked to arm health physicists as expert witnesses to defend US government interests. Chernobyl factored in these cases because the chronic, low-dose exposures Chernobyl served up were more similar to the downwinder and human-subjects’ cases than those in the Japanese Life Span Study. Acknowledging the existence of a pediatric thyroid cancer epidemic in the Chernobyl territories would have imperiled the US government’s defense in lawsuits that were working their way through courts at the time. Marshall Islands, Nevada Test Site, Three Mile Island, and Hanford pluto­nium plant downwinders all pointed to thyroid cancer as one major health consequence of their exposures.

Missed Opportunities

In 1996, after the number of pediatric thyroid cases in Ukraine and Belarus had grown to the thousands, UN agencies could no longer deny the epidemic. UN scientists conceded that they had been wrong—that Chernobyl triggered pediatric thyroid cancers earlier and more significantly than studies in the open litera­ture had predicted. With that announcement, dozens of research teams rushed to do follow-up studies on Chernobyl-caused pediatric cancers. But what of the larger, long-term epidemiological study of a wide range of Chernobyl health consequences? That study promised to resolve many of the unanswered questions about exposures to chronic low doses of radioactivity.

The prospects for such a study looked good. In the early 1990s, Japan donated $20 million to the WHO for a pilot study of Chernobyl health effects. The UN General Assembly formed an ad hoc Chernobyl Task Force and set to work organizing a pledge drive to raise $646 million (more than $1 billion today) to resettle two hundred thousand people from contami­nated areas and fund the much-expected long-term epidemiological study of Chernobyl health effects.

Abel Gonzalez, the IAEA official who directed the International Chernobyl Project, had asked that the UN pledge drive be held after his group’s assessment had been published. Margaret Anstee, head of the Cher­nobyl Task Force, innocently agreed to delay the drive until September 1991. Unfortunately, after the Interna­tional Chernobyl Project announced it had found no detectable health effects, Anstee’s pledge drive failed. Instead of $347 million, the task force raised less than $6 million. The major donors, Germany, the United States, and Japan, begged off, citing the IAEA’s “no effects” assessment “as a factor.” Without funding, no study of long-term low-dose effects on human health occurred. To this day, scientists say we know little about the low-dose health effects. They should say that we have little information in the open literature about low-dose effects. That distinction between open and classified literature should be made every time. It is an important distinction for those thinking about academic freedom and, as it turns out, unfreedom.

In the following years, UN officials used the hasty, poorly designed International Chernobyl Project study to pursue a narrative that the only Chernobyl-related health problems were those caused by anxiety over the fear of radiation. Despite the reams of evidence com­ing to light from declassified Soviet medical facilities, UN officials at the IAEA and the UN Scientific Com­mittee for Effects of Atomic Radiation (UNSCEAR) repeated this claim so often that it was taken as reality.

In 1996, UNSCEAR produced a major review of Chernobyl research. Three UNSCEAR editors, one of them the same Fred Mettler who led the International Chernobyl Project assessment, dismissed about half of the studies gathered for the review. These largely came from Soviet researchers’ reports of wide-scale health problems. The UNSCEAR editors disparaged these studies as “unverified” and “sloppy” with “poor qual­ity control” and warned that their conclusions should be “treated with caution.” The reporters summarized, “Given the experience thus far accumulated in radia­tion studies, unless the exposures are relatively high, it is unlikely that environmentally exposed populations would experience markedly enhanced incidences of radiation-induced effects.” Psychological damage and economic hardship, the 1996 UNSCEAR report main­tained, echoing the original IAEA-led assessment, were the most pervasive and likely causes of health problems in Chernobyl territories. The UNSCEAR reporters rec­ommended against follow-up studies on low-dose effects because of “presumably low level of risk.” In 2006, Met­tler authored the Chernobyl Forum report, which largely repeated the conclusions of the reports UN committees had issued since 1986. The Chernobyl Forum report today is most often cited as the authoritative assessment of Chernobyl damage.

The assertion that Chernobyl was “the worst [nuclear] disaster in human history” and only fifty-four people died is used as a rationale to continue build­ing nuclear power plants. That number, published in respectable material produced by UN agencies, is often cited, but is clearly incorrect. The Ukrainian state currently pays compensation to thirty-five thousand women whose spouses died from Chernobyl-related health problems. This number reckons only the deaths of men who were old enough to marry and had recorded exposures. It does not include the mortal­ity of women, young people, infants, or people who did not have documented exposures. Off the record, Ukrainian officials give a death toll of 150,000. That figure is only for Ukraine, not Russia or Belarus, where 70 percent of Chernobyl fallout landed.

Underestimating Chernobyl damage meant that almost all of the post–Cold War lawsuits related to exposures to radioactivity failed in the United States, Great Britain, and Russia. It left humans unprepared for the next disaster. When a tsunami crashed into the Fukushima Daiichi Nuclear Power plant in 2011, Japanese leaders responded in ways eerily similar to the responses of Soviet leaders. Today, thirty-four years after the Chernobyl accident, we are still short on answers and long on uncertainties. Ignorance about low-dose exposures is tragic and far from accidental, an ignorance that exposes the breach between open and classified research. We stand with a leg on each side of a crevasse between those two bodies of scholarship. The rift between facts and alternative facts grew out of that deep ravine between open and classified knowledge sunk during the Cold War.

This article was first published in the journal of the American Association of University Professors and is republished with permission of the author.

Kate Brown is professor of history in the Department of Science, Technology, and Soci­ety at the Massachusetts Insti­tute of Technology. She is the author of several prize-winning histories, including Plutopia: Nuclear Families in Atomic Cities and the Great Soviet and American Plutonium Disasters (2013). Her latest book, Manual for Survival: A Chernobyl Guide to the Future (2019), is a finalist for the 2020 National Book Crit­ics Circle Award.