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Parasites of parasites—sometimes called hyperparasites—seem to be quite common. In fact, parasites of parasites are themselves prone to parasites, leading to what might appear to be an endless progression of interspecies abuse.

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xlXg TIL that until the late 80’s, chocolate diamonds were considered worthless for jewelry and only used for industrial purposes. This lasted until so many were found that marketing strategy was changed in an attempt to make them popular and sell-able gems.
AD9Kg TIL an undercover officer was led on a chase of a suspicious person. A CCTV officer used cameras to tell him where the suspect was at throughout the chase. After 20 minutes they discovered that the "suspect" was actually the undercover officer chasing himself at the direction of the CCTV officer.
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XNkE TIL the former leader of North Korea, Kim Jong Il, had the campaign slogan, “Do not expect any change from me.”
OPGL TIL of the ESPN show Playmakers. It was their first original drama series depicting the lives of an American football team. Despite high ratings, the show was cancelled after 11 episodes due to pressure from the NFL, who thought the show negatively portrayed pro football players