Here Are 30 Of The Greatest Conspiracy Theories In History

The world is full of conspiracy theories. These 30 you’re about to read below are some of history’s greatest and most controversial conspiracy theories.

According to Wikipedia, There are many unproven conspiracy theories of varying degrees of popularity, frequently related to but not limited to clandestine government plans, elaborate murder plots, suppression of secret technology and knowledge, and other supposed schemes behind certain political, cultural, and historical events.

1. Chemtrails


Chemtrail conspiracy theorists believe that chemicals are deliberately sprayed into the air by unmarked planes.

2. Global warming is a hoax


Climate change opponents believe that global warming is a hoax to get people to accept higher tax rates.

3. The Aids virus was created in a laboratory


Based on the theories of Dr William Campbell Douglass, many believe that that HIV was genetically engineered in 1974 by the World Health Organization, the CIA and the KGB in order to control the world population.



More than 200 miles east of Anchorage, Alaska, is the Pentagon’s High-frequency Active Auroral Research Program, is believed to be a weapon that can control weather patterns.

5. Plastic coffins and concentration camps


Just outside Atlanta, Georgia, beside a major road are approximately 500,000 plastic coffins. Theorists believe this is where FEMA will store the bodies of dead Americans during this New World Order take over.

6. The 2004 Indian Ocean tsunami


Many people believed that an Indian nuclear experiment cause the tsunami and attempted to wipe out the population in the area.

7. Fluoridation


Believed to be caused by pharmaceutical companies in order to keep people going to their doctors since a healthy nation isn’t profitable. It is also believed that fluoride dumbs down mental capabilities and has been banned in several countries.

8. Pan Am Flight 103

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Pan Am Flight 103 was Pan American’s third daily scheduled transatlantic flight from Heathrow to New York John F. Kennedy International Airport. On December 21, 1988, a protected drug route from Europe to the United States – allegedly called Operation Corea -, which allowed Syrian drug dealers to ship heroin to the US using Pan Am flights.

Another version of this theory is that the CIA knew in advance this exchange would take place, but let it happen anyway, because the protected drugs route was a rogue operation, and the American intelligence officers on the flight had found out about it, and were on their way to Washington to tell their superiors.

9. The Philadelphia Experiment


According to some beliefs, the scientists on the experiment found a way to bend light around the ship but that the experiment went wrong and Eldridge was transported through space and time, reappearing at sea.

10. Pearl Harbor


Theorists believe that President Roosevelt provoked the Japanese attack on the US naval base in Hawaii in December 1941, knew about it in advance and covered up his failure to warn his navy commanders in order to go to war with Japan.

11. The peak oil conspiracy


The peak oil conspiracy theorists believe that peak oil is a fraud concocted by the oil industries to increase prices amid concerns about future supplies and the belief that it is a scarce commodity.

12. The Protocols of the Elders of Zion


This theory claims that the “elders,” will run the world through control of the media and finance, and replace the traditional social order with one based on mass manipulation.

13. Harold Wilson was a Soviet agent


Soviet traitor Anatoliy Golitsyn is thought to have claimed that Wilson was a KGB spy.

14. Black or unmarked helicopters


An alleged symbol and warning sign of a military takeover of part or all of the United States. Rumours would circulate that, for instance, the United Nations patrolled the US with black helicopters, or that federal agents used black helicopters to enforce wildlife laws. In Britain, a similar conspiracy theory known as “phantom helicopters” has been reported since the mid 1970s.

15. The Moscow apartment bombings


Remember that spy who was poisoned by the Russians? Aleksey Galkin and former FSB officer the late Alexander Litvinenko (who was killed with Polonium-210 in London in November 2006) accused the Russian government of the apartment bombings to justify the second Russian war against Chechnya.

16. The July 7, 2005 Tube bombings


Theorists claim this image is fake because the man in the white hat – believed to be Mohammed Sidique Khan – has been electronically placed on the picture after it was taken. They claim that it shows his arm behind a railing while the rest of his body is in front and that the bar behind his head goes across and in front of his face.

Theorists postulate, among other things, that the bombs which went off on the Tube trains were actually under the floors of the vehicles and not in the alleged plotters’ back packs.

17. Paul is dead


Many people think that Paul McCartney died in a car crash 1966 and was replaced by a look-alike and sound-alike.

18. The disappearance of Shergar


Shergar was arguably the greatest racehorse to have ever lived.. There are numerous theories with the IRA, Colonel Gadaffi and the Mafia. One story suggests that the IRA kidnapped the horse for Gadaffi in return for weapons. While another suggests that the New Orleans mafia took him.

19. Shakespeare was somebody else


Theorists believe there is a lack of evidence proving that the actor sometimes known as Shakespeare of Stratford was accountable for the body of works that bear his name. Very little biographical information exists about Shakespeare.

20. North American Union


The North American Union (NAU) is a theoretical regional union of Canada, Mexico and the United States similar in structure to the European Union, sometimes including a common currency called the amero. Theorists who believe that the three countries are planning for this believe that it is part of a global conspiracy to set up something called the New World Order (NWO).



Is the code name of a CIA series that experimented in the behavioral program that experimented in the behavioral engineering of humans from 1953 to 1973.

22. Operation Northwoods


A conspiracy involving a plan by the Joint Chiefs of Staff to launch a fake Cuban terror campaign on American soil to persuade the US public to support an invasion against Castro.

23. Elvis Presley faked his own death


A persistent belief is that “the King” did not die in 1977.

24. Diana, Princess of Wales


The theory is that rogue elements in the British secret service decided that Diana’s relationship with Fayed was a threat to the monarchy and, therefore, to the British state.

25. The Jesus conspiracy


Those who believe in this think that Jesus married Mary Magdalene, had one or more children, and that those children or their descendants emigrated to southern France.

26. The Illuminati and the New World Order


A conspiracy in which powerful and secretive groups (the Illuminati, the Bilderberg Group and other shadowy cabals) are plotting to rule mankind with a single world government.

27. Nasa faked the moon landings


Many people still believe that the U.S. did not actually land on the moon and was actually an attempt to fool the Russians.

28. A flying saucer crashed at Roswell in 1947


This is the one that started the whole UFO craze with a crash at Roswell, New Mexico, sometime before July 7, 1947. At first the US authorities stated explicitly that this was a flying saucer or disk as shown by the splash story on that day’s Roswell Daily Record. Also, numerous eye witnesses stated seeing something metallic crash into the earth.

29. The assassination of John F Kennedy


Footage of the motorcade taken by Abraham Zapruder on 8mm film supported the growing belief that at least four shots were fired – not the three that the Warren Commission claimed.

The moments of impact recorded on the film also suggested that at least one of the shots came from a completely different direction to those supposedly fired by Oswald – evidence backed up by testimony of several eye witnesses. Many believed that several shots were fired by gunmen hiding behind a picket fence on a grassy knoll overlooking the plaza.

30. September 11, 2001


This one is probably one of the most widely believed conspiracy theories out there, besides the JFK one. Another belief that the U.S. government turned a blind eye to warnings that the World Trade Centers would be under attack and purposely ignored those warnings in order to justify going to war.

If you would like to read more in-depth about these conspiracy theories, you can check out the piece the Telegraph did. What do you think about these conspiracies? Make sure to give this a share on Facebook before you go. (h/t The Telegraph)