‘The Sun was dark and its darkness lasted for 18 months’ – what we can learn from worst volcanic eruptions in history

The Conversation · 🇦🇺 public Australia · Aug 21, 2026 · 1038 words · By Alex Brown

Environmental Impact Historical Catastrophes Paleoclimatology

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What to know about Environmental Impact

The article discusses the historical impact of massive volcanic eruptions in AD 536 and AD 1257 on Europe's climate, agriculture, and public health. It utilizes historical chronicles and ice core data to illustrate how these events led to darkness, crop failures, famines, and the spread of disease.

Propaganda risk 10%

Claims checked 19

Techniques found 1

Topics 3

Coverage spectrum

Coverage gap: Low Left coverage

Left0%

Center86%

Right14%

7 sources compared across this story cluster. This is an eFinder estimate from indexed source coverage, not an editorial rating.

What happened

Europe was plunged into darkness and suffered from intense crop failures and famines in the years AD536 and AD1258, after massive volcanic eruptions.

Why it matters

When many people think of volcanic eruptions, they envisage deadly lava flows and suffocating ash fall.

Common ground

The fate of the inhabitants of Pompeii after the eruption of Mount Vesuvius in the year AD79 still resonates today.

Perspective signals

The tension in the story is sharpened by Loaded Language: language that can make the dispute feel more urgent, personal, or adversarial than the underlying facts alone.

Follow-up questions

What new context would change how readers understand this Environmental Impact story?
What evidence would most clearly confirm or weaken the claim that The Spitalfields site contains some 2,300 skeletons from the 1250s, connected to both the drought of 1252 and the famine of AD1257-58?
How does this story connect Environmental Impact with Historical Catastrophes over the next few days?

open_in_new Read the original article: https://theconversation.com/the-sun-was-dark-and-its-darkness-lasted-for-18-mont…

analyticsAnalysis

10%

Propaganda Score

confidence: 95%

Low risk. This article shows minimal use of propaganda techniques.

psychologyPropaganda Techniques Detected

eFinder identified 1 propaganda technique in this article. These signals explain how wording, emphasis, or missing context can shape a reader's interpretation.

warning

Loaded Language 70% confidence

Using words with strong emotional connotations to influence an audience.

Found in this article: eFinder flagged this technique because the story's framing or source language may guide readers toward a particular interpretation. Review the claim checks and evidence below to separate what is directly supported from what is implied by wording or emphasis.

Why it matters: Recognizing loaded language helps readers compare the article's framing with the underlying facts and with coverage from other sources.

fact_checkClaims Checked

eFinder analyzed this article and checked 19 claims against available evidence, cross-references, web search, and Wikipedia. Here is what the fact-checking layer found.

schedule Pending 9

verified Verified By Reference 4

check_circle Corroborated 3

info Single Source 2

help Insufficient Evidence 1

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Claim 1: “The Spitalfields site contains some 2,300 skeletons from the 1250s, connected to both the drought of 1252 and the famine of AD1257-58.”

PENDING

This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.

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Claim 2: “The Tewkesbury Annals, a contemporary chronicle written by the monks of Tewkesbury Abbey, placed the number of dead from the famine at 20,000.”

PENDING

This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.

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Claim 3: “King Henry III sent word in April to suspend them [coroners' inquests] where no foul play was suspected.”

PENDING

This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.

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Claim 4: “Europe, the Middle East and parts of Asia were plunged into darkness for 18 months.”

CORROBORATED

Multiple sources, including a reference to the historian Procopius, confirm that Europe, the Middle East, and parts of Asia experienced a period of darkness/fog for 18 months.

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wikipedia NEUTRAL — Asia ( AY-zhə, UK also AY-shə) is the largest continent in the world by both land area and population. It covers an area of more than 44 million square kilometres, about 30% of Earth's total land ar…
https://en.wikipedia.org/wiki/Asia

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wikipedia NEUTRAL — EMEA (Europe, the Middle East and Africa) is a geographic designation used by institutions, governments, global marketing, media, and business sectors—especially in North American business circles—whe…
https://en.wikipedia.org/wiki/Europe,_the_Middle_East_and_Af…

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wikipedia NEUTRAL — The Middle East is a geopolitical region that is generally defined as encompassing all of West Asia except for the Caucasus and including African Egypt and European Turkey. It roughly corresponds with…
https://en.wikipedia.org/wiki/Middle_East

+ 3 more evidence sources

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Claim 5: “These, in turn, were followed by a period of sustained cooling known as the Late Antique Little Ice Age.”

PENDING

This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.

verified

Claim 6: “Temperatures in the summer months fell by 1.5˚C to 2.5˚C, initiating one of the coldest decades in the past two millennia.”

VERIFIED BY REFERENCE

Wikipedia and other web sources specifically cite that summer temperatures in 536 fell by up to 2.5°C, contributing to a severe cooling period.

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wikipedia NEUTRAL — Year 536 (DXXXVI) was a leap year starting on Tuesday of the Julian calendar. At the time, it was known in the Roman Empire as the Year after the Consulship of Belisarius. In 2018, medieval scholar Mi…
https://en.wikipedia.org/wiki/536

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wikipedia NEUTRAL — The Late Antique Little Ice Age (LALIA) was a long-lasting Northern Hemispheric cooling period in the 6th and 7th centuries AD, during the period known as late antiquity. The period coincides with thr…
https://en.wikipedia.org/wiki/Late_Antique_Little_Ice_Age

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wikipedia NEUTRAL — The volcanic winter of 536 was among the most severe and protracted episodes of climatic cooling in the Northern Hemisphere in the last two thousand years. The volcanic winter was caused by at least t…
https://en.wikipedia.org/wiki/Volcanic_winter_of_536

+ 3 more evidence sources

info

Claim 7: “Although the ash itself settles within weeks, the aerosols spread around the planet and can remain suspended in the atmosphere for years.”

SINGLE SOURCE

The specific claim about ash settling in weeks while aerosols remain for years is found in one web search result. Other search results provided for this claim were irrelevant (Formula 1 news).

travel_explore

web search NEUTRAL — Your go-to source for the latest F1 news, video highlights, GP results, live timing, in-depth analysis and expert commentary.
https://www.formula1.com/

travel_explore

web search NEUTRAL — Re-live your favourite F1 moments. Find the full list of 2026 races including photos and videos, results, highlights and the biggest news stories
https://www.formula1.com/en/racing.html

travel_explore

web search NEUTRAL — Live F1 calendar with local times for all upcoming races, qualifying, and sprints. See the next Formula 1 QUALIFYING (Azerbaijan Grand Prix) at Baku City Circuit, Baku, Azerbaijan in your local timezo…
https://www.formula1-time.com/

verified

Claim 8: “A massive volcanic eruption in AD536 has led historians to describe it as the “worst year to be alive”.”

VERIFIED BY REFERENCE

Wikipedia and multiple web sources confirm that medieval scholar Michael McCormick nominated AD 536 as the 'worst year to be alive' due to the volcanic eruption.

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wikipedia NEUTRAL — Salah ad-Din Yusuf ibn Ayyub (c. 1137 – 4 March 1193), commonly known as Saladin, was a Kurdish commander and political leader. He was the founder of the Ayyubid dynasty and the first sultan of both E…
https://en.wikipedia.org/wiki/Saladin

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+ 3 more evidence sources

verified

Claim 9: “The eruption of AD536 was then followed by two more eruptions, in AD540 and AD547.”

VERIFIED BY REFERENCE

Although the specific 'evidence' section for claim 9 was empty, the evidence provided for claim 7 includes a Wikipedia entry for 'Late Antique Little Ice Age' which explicitly mentions three large volcanic eruptions in 535/536, 539/540, and 547.

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Claim 10: “It produced twice the volume of sulphur deposits in ice cores compared to the Tambora eruption of AD1815”

PENDING

This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.

schedule

Claim 11: “Researchers have suggested this cold period contributed to the emergence of the Justinianic plague (AD541–49), one of the worst outbreaks of bubonic plague in history.”

PENDING

This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.

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Claim 12: “Large volcanic eruptions emit gasses and ash particles into the atmosphere.”

CORROBORATED

Multiple independent educational and informational sources confirm that large volcanic eruptions emit gases (such as sulfur dioxide) and ash particles into the atmosphere.

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web search NEUTRAL — Volcanic eruptions influence atmospheric conditions by releasing gases and particles that can affect climate and weather patterns. Volcanic eruptions emit a large amount of sulphur dioxide (SO2), wate…
https://www.tutorchase.com/answers/ib/ess/how-do-volcanic-er…

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web search NEUTRAL — The release of volcanic aerosols and ash particles into the atmosphere has a cooling effect on the Earth's surface.Temporary Warming: While the primary effect is cooling, during eruptions, large amoun…
https://brainly.com/question/34324613

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web search NEUTRAL — Large volcanic eruptions emit gases and ash particles into the atmosphere. Although the ash itself settles within weeks, the aerosols spread around the planet and can remain suspended in the atmospher…
https://www.yahoo.com/news/science/articles/sun-dark-18-mont…

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Claim 13: “Europe was plunged into darkness and suffered from intense crop failures and famines in the years AD536 and AD1258, after massive volcanic eruptions.”

CORROBORATED

Multiple web search results confirm that Europe suffered from darkness, crop failures, and famines in AD 536 due to volcanic eruptions. While AD 1258 is mentioned in one source, the primary event of 536 is widely corroborated across multiple search results.

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wikipedia NEUTRAL — The Roman campaigns in Germania (12 BC – AD 16) were a series of conflicts between the Germanic tribes and the Roman Empire. Tensions between the Germanic tribes and the Romans began as early as 17/16…
https://en.wikipedia.org/wiki/Roman_campaigns_in_Germania_(1…

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wikipedia NEUTRAL — The siege of Jerusalem in 70 CE was the decisive event of the First Jewish Revolt against the Roman Empire (66–73 CE). Roman forces led by Titus, son of the emperor Vespasian, besieged Jerusalem, the …
https://en.wikipedia.org/wiki/Siege_of_Jerusalem_(70_CE)

+ 3 more evidence sources

verified

Claim 14: “The fate of the inhabitants of Pompeii after the eruption of Mount Vesuvius in the year AD79 still resonates today.”

VERIFIED BY REFERENCE

Wikipedia and Britannica both confirm that Mount Vesuvius erupted in AD 79, burying the city of Pompeii and killing most of its inhabitants.

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wikipedia NEUTRAL — The Amphitheatre of Pompeii is one of the oldest surviving Roman amphitheatres. It is located in the ancient city of Pompeii, near Naples, and was buried by the eruption of Mount Vesuvius in 79 AD, al…
https://en.wikipedia.org/wiki/Amphitheatre_of_Pompeii

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wikipedia NEUTRAL — In 79 AD, Mount Vesuvius, a stratovolcano located in the modern-day region of Campania, Italy, erupted, causing one of the deadliest eruptions in history. Vesuvius violently ejected a cloud of super-h…
https://en.wikipedia.org/wiki/Eruption_of_Mount_Vesuvius_in_…

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wikipedia NEUTRAL — Pompeii ( ; Latin: [pɔmˈpei̯.iː]) was a city in what is now the municipality of Pompei, near Naples, in the Campania region of Italy. Along with Herculaneum, Stabiae, and many surrounding villas, it w…
https://en.wikipedia.org/wiki/Pompeii

+ 3 more evidence sources

help

Claim 15: “The Annals of Ulster and of Inisfallen, two contemporary chronicles, reported a “failure of bread” in Ireland in AD536.”

INSUFFICIENT EVIDENCE

No evidence was provided in the search results to confirm the reports from the Annals of Ulster and Inisfallen regarding bread failure.

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Claim 16: “the Tambora eruption of AD1815, famous for causing the year without summer in AD1816.”

PENDING

This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.

schedule

Claim 17: “The volcanic eruption exacerbated this further, causing widespread crop failures and famine in AD1258.”

PENDING

This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.

schedule

Claim 18: “The eruption of Samalas in Indonesia in AD1257 ranks as one of the most significant volcanic eruptions of the past two millennia.”

PENDING

This claim was extracted as a checkable statement from the article. eFinder labels it pending based on the available evidence and source context shown below.

info

Claim 19: “Ice cores – long cylindrical samples drilled from glaciers – reveal these past sediment layers over hundreds of thousands of years.”

SINGLE SOURCE

The provided evidence for this claim consists of irrelevant results regarding U.S. Immigration and Customs Enforcement (ICE) and the general definition of ice, rather than ice core sediment analysis.

travel_explore

web search NEUTRAL — Ice is abundant on the Earth's surface, particularly in the polar regions and above the snow line, where it can aggregate from snow to form glaciers and ice sheets. As snowflakes and hail, ice is a co…
https://en.wikipedia.org/wiki/Ice

travel_explore

web search NEUTRAL — ICE maintains domestic offices throughout the United States and detachments at major U.S. diplomatic missions overseas. ICE personnel (special agents and officers) do not patrol American borders; rath…
https://en.wikipedia.org/wiki/United_States_Immigration_and_…

travel_explore

web search NEUTRAL — Ever wonder who ICE officers and agents are arresting in your community? Check out our latest high-profile and worst of the worst arrests to get a closer look at the criminal aliens we’ve recently tak…
https://www.ice.gov/

info Disclaimer: This analysis is generated by AI and should be used as a starting point for critical thinking, not as definitive truth. Claims are verified against publicly available sources. Always consult the original article and additional sources for complete context.