Did you know 12 million Americans believe their country is run by shape-shifting lizard people?
How about the theory that ALL professional sports are totally fixed? These are just two of the most bizarre conspiracy theories the folks at Mental Floss could find - but what if they're hiding some from us? It could all be a conspiracy.
Watch the video above as world renowned author John Green takes us through 22 really strange conspiracy theories that people actually believe.
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