Russia's opposition supporters march in memory of murdered Kremlin critic Boris Nemtsov

Boris Nemtsov: conspiracy theories begin to emerge

Analysis Tue 3 Mar, AT 14:07

Was Nemtsov killed by Islamists, the West, Putin's opponents or the Russian president himself?

Glowing orbs

UFO sightings: two glowing orbs 'spotted' on horizon

One-Minute Read Mon 9 Feb, AT 13:44

UFO experts 'summon up' mysterious lights by meditating - or it could be some nautical flares

AirAsia plane

AirAsia QZ8501 conspiracy theories: what happened to the plane?

Briefing Mon 5 Jan, AT 15:15

Some online theorists believe AirAsia crash was predicted last year, others say plane was shot down

MH370 conspiracy theories: what happened to the missing Malaysia Airlines plane?

One-Minute Read Fri 27 Feb, AT 14:36

Was Flight MH370 captured by aliens? Stolen by Vladimir Putin? Or did it crash in Ukraine? A round-up of the best conspiracy theories

'The Day Kennedy Died' brings JFK assassination back to life

Fri 15 Nov, AT 08:21 Holden Frith

Forget the conspiracy theories and meet the men and women who were there on 22 Nov 1963

JFK

Who killed JFK? 51 years of conspiracy theories

Briefing Mon 2 Mar, AT 15:49

JFK was killed by the CIA, the KGB, aliens or by accident. Why three shots fired in Dallas still reverberate across America

UFO files: faceless humanoids spook Welsh hotel owner

Summary Thu 12 Jul, AT 10:59

Highlights from the latest tranche of MoD 'X-Files' released by the National Archives

Barack Obama

Barack Obama birther theory resurrected by ex-literary agent

First Post Fri 18 May, AT 14:27

Booklet produced in 1991 saying President was born in Kenya gives new hope to conspiracy theorists

Doomsday

Nasa debunks 2012 doomsday theory for a third time

Video Fri 9 Mar, AT 13:18

New video pours scorn on doomsday scenarios - but doth Nasa protest too much?

Phobos-Grunt failure fuels alien war conspiracy theories

First Post Tue 29 Nov, AT 12:40

Dmitry Medvedev wants to punish whoever caused a Russian probe to fail. Aliens, watch out

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