Some conspiracy theories simply refuse to fade. Despite overwhelming evidence to the contrary, many still insist that shadowy forces are behind the world’s most devastating tragedies. This list showcases some of the most enduring conspiracy theories linked to infamous historical and contemporary disasters.
10. The Titanic Wasn't Really Lost

The tale of the Titanic is legendary. The ill-fated ship sank over a century ago, but it continues to be memorialized through films, songs, and plays. Among the many theories surrounding its sinking is one that claims the Titanic never actually went down.
According to this conspiracy, the Titanic was secretly replaced by her sister ship, the Olympic, in a grand scheme orchestrated by J.P. Morgan, the owner of White Star Line. The Olympic had already been involved in two accidents just months after its 1911 launch, sustaining extensive damage that could have spelled financial disaster for White Star, who was already struggling.
The theory suggests that the Titanic and Olympic were switched, with the Olympic deliberately sinking in what was staged as a disaster, while the Titanic continued sailing under the name Olympic.
In his 1998 book, Titanic: The Ship That Never Sank?, author Robin Gardiner delved into this theory. He pointed out that the Olympic was known to have 16 portholes, while the Titanic had 14. Yet, when the Titanic embarked on its maiden voyage, it had 16 portholes. Gardiner also mentioned rumors circulating among workers about the alleged scam, which led some to refuse employment on the Titanic.
Further 'evidence' supporting this theory includes several prominent passengers canceling their trips on the Titanic just days before it set sail—J.P. Morgan himself among them.
9. UFO Prevented Blast At Chernobyl

In April 1986, a routine safety test at the Chernobyl Nuclear Power Plant went horribly wrong. The test triggered a massive steam explosion followed by a fierce graphite fire that spread rapidly through the machine shop and toward the third generating unit. The unit’s capacity was gradually reduced, and eventually, the emergency cooling system was shut down in a bid to halt the reactor’s meltdown.
However, an energy control officer refused to allow the fourth generator to be powered down, leading it to be destroyed by the intense steam. It was fortunate that the generator did not explode, as it contained around 180 tons of enriched uranium. Had it detonated, it could have wiped out half of Europe.
Two years after the catastrophe, a conspiracy theory began circulating about a UFO's involvement in preventing the fourth generator from exploding. Several people claimed to have witnessed a UFO hovering over the unit for at least six hours, during which time it allegedly reduced the radiation levels fourfold. These eyewitnesses believe the UFO was the sole reason the generator was destroyed by a thermal blast rather than an explosive meltdown.
8. The Indian Ocean Tsunami Was Caused By A Nuclear Experiment

It seems that even natural disasters can’t simply be written off as just that—natural. Shortly after the catastrophic Indian Ocean tsunami in 2004, rumors began circulating that the disaster may not have been caused by nature alone.
A theory, still told within the Muslim community today, claims that the tsunami was actually the result of a nuclear experiment carried out by India, with backing from the US and Israel. At the time, various newspapers reported that India had acquired nuclear technology from these countries and was experimenting with ‘destroying’ or ‘exterminating’ densely populated areas.
The theory gained traction due to the fact that the highest death toll occurred in the densely populated Muslim regions of Southeast Asia, further fueling the conspiracy.
7. The BP Oil Spill Was Caused By ‘Eco-Warriors’

The Gulf of Mexico oil spill in 2010 outraged millions globally, particularly those passionate about environmental preservation. The catastrophe sparked a large volunteer effort aimed at cleaning up the mess and protecting the local wildlife and ecosystems.
However, the timing of the disaster fueled various conspiracy theories. Since the rig sank on Earth Day, some believe that eco-terrorists or 'eco-warriors' were behind the explosion on the Deepwater Horizon as a protest against offshore drilling and the broader oil industry. President Barack Obama's decision to deploy a SWAT team to the site only solidified this belief among conspiracy theorists, as SWAT teams are typically associated with terrorist attacks.
Other theories suggest that North Korea attacked the oil rig with a torpedo, the Russian government was sending a cryptic message, the US itself orchestrated the explosion, or even that God was punishing the US for its stance on Israel at the United Nations.
6. Flight 587 Crash Was Deliberate

Just two months after the chaos of 9/11, another tragedy struck. American Airlines Flight 587, an Airbus A300, crashed moments after taking off from JFK Airport. The plane went down in Belle Harbor, Queens, resulting in 265 fatalities.
The cause of the crash was determined to be wake turbulence from a preceding aircraft, which led the first officer to overcorrect with the rudder controls, causing the vertical stabilizer to snap off. Both engines and the tail section were torn off before impact.
Within days of the crash, a conspiracy theory surfaced online. Geoff Metcalf wrote an article for WND, stating that he, along with many others, believed the crash was not a mere accident.
Metcalf theorized that the plane had been sabotaged and sought the opinion of an experienced pilot. The pilot affirmed that he had never heard of a plane losing both its tail section and engines simultaneously.
In his article, Metcalf also noted that several eyewitnesses reported seeing flames emanating from the plane’s fuselage before the tail section and engines detached. According to Metcalf, another experienced pilot rejected the possibility that wake turbulence from another aircraft was the cause of Flight 587’s problems, deeming it highly unlikely.
5. White Widow Was Killed During Kenya Mall Attack

As is often the case after a terrorist attack, conspiracy theories ran rampant following the Westgate mall attack in Kenya in 2013. While the Kenyan government claimed all the attackers were killed, some believe that some managed to escape. Other theories argue that there were never any hostages, despite media reports to the contrary. One of the most controversial claims is that the Kenyan military prolonged the siege to loot the abandoned shops.
The speculation grew further when the Kenyan foreign minister suggested that the 'White Widow' Samantha Lewthwaite was one of the attackers. He revealed that a British woman was involved and that she had a history of terrorist acts. Adding to the confusion were statements from the Kenyan interior minister, who claimed that several militants—allegedly all male—had dressed in female clothing as part of a disguise.
Some who subscribe to the theory about Lewthwaite also believe she may have died during the attack. Allegedly, a few soldiers told Reuters that one of the deceased militants was a white female.
4. Port Arthur Massacre Was A False Flag Operation

In April 1996, 28-year-old Martin Bryant traveled from his home in New Town, Hobart, to Port Arthur, Tasmania. After arriving at a guesthouse just before noon, he murdered the owners before moving on to the Port Arthur historic site, where he continued his rampage, shooting people as he passed through the café, gift shops, and car park. Thirty-five lives were lost.
Almost as shocking as the massacre itself were the conspiracy theories suggesting the entire event was staged. Supporters of this theory pointed to claims that senior staff members at Port Arthur had prior knowledge of the attack and had gone away for a seminar.
It is claimed that the Royal Hobart Hospital had an emergency plan in place just two days before the shooting occurred. A World Press Convention in Hobart ensured a large presence of reporters to cover the event. Some conspiracy theorists argue that the massacre was orchestrated specifically to justify the implementation of new gun laws in Tasmania.
In early 2017, 21 years after the shooting, One Nation candidate Peter Rogers attracted significant criticism when he wrote on his website that the Port Arthur incident had been fabricated.
3. HAARP Caused The Haiti Earthquake

The High-Frequency Active Auroral Research Program (HAARP) has been the subject of numerous conspiracy theories over the years. It is blamed for a variety of phenomena, including natural disasters, weather manipulation, and even mind control.
It is no surprise, then, that the program has also been accused of causing the Haiti earthquake in 2010. Venezuelan president Hugo Chavez publicly declared his belief that HAARP or a similar program was utilized as a tectonic weapon to trigger the earthquake. The Venezuelan media eagerly picked up the story, claiming that HAARP had the capability to cause extreme weather changes and was connected to the devastating event in Haiti.
Some conspiracy theorists are convinced that the US was conducting secret tests to control the weather. According to this theory, the tests went terribly wrong, and the earthquake that was intended for Iran instead struck Haiti.
2. New Orleans Levees Were Bombed During Hurricane Katrina

The sheer force of Hurricane Katrina in 2005 caused multiple breaches in the New Orleans levees, resulting in widespread flooding across more than 70 percent of the city. It is believed that the more significant breaches occurred due to soil failure beneath the levees or the structural integrity of the levee systems themselves.
However, the residents of the devastated Ninth Ward have a different perspective. Some even testified before the House Select Committee on Hurricane Katrina, expressing their strong belief that the levees were intentionally bombed as part of a plan for ethnic cleansing and that it amounted to an act of genocide.
Both Louis Farrakhan, the leader of the Nation of Islam, and filmmaker Spike Lee have also publicly supported this theory. Lee mentioned that he doesn’t find it implausible that there was an attempt to forcibly remove black residents from New Orleans.
It certainly doesn’t help that levees were intentionally bombed in 1927 to protect other parts of the city, which resulted in flooding black neighborhoods.
1. Spanish Influenza Was Caused By Vaccinations

The flu pandemic of 1918 spanned two years and claimed millions of lives across the globe, predominantly affecting healthy young adults. It is believed that the virus may have eradicated as much as 5 percent of the world’s population at the time.
According to some conspiracy theories, however, there was no flu virus involved. Instead, these theories suggest that the deaths were caused by poisoned injections containing a mixture of vaccines. Many believe that soldiers at Fort Dix were subjected to this 'vaccine bomb' in 1918, though they never had swine-related flu.
This theory also argues that the disease was seven times more widespread among vaccinated soldiers than among civilians who opted not to get vaccinated. Reports of infantile paralysis affecting soldiers helped strengthen this claim, as this type of paralysis is known to be a potential side effect of vaccine poisoning.
