It Must Be Known!

Every day you will learn something new. Open up your brain, get ready to receive tons of useful (and sometimes useless) information. Instagram: ItMustBeKnown.

[It Must Be Known! @ItMustBeKnown]

🔥🔥🔥🔥https://t.co/goADLZKpU5

[It Must Be Known! @ItMustBeKnown]

On this day 49 years ago. Martin Luther King Jr. was murdered in Memphis, TN. His impact has not been and will never be forgotten.

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Approximately 92.4% of teachers spend their own money on their students or classrooms. #TeacherAppreciationWeek

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@EnjoyingMagic https://t.co/CmN2D4VVj6

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Every year, Walt Disney World's "Lost and Found" collects more than 6,000 cell phones, 3,500 digital cameras, and 18,000 hats.

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A world record for the longest conga dance line was set by 119,986 people in Miami in 1988. #InternationalDanceDay

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The first CD pressed in the US was Bruce Springsteen's "Born in
the USA."

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The man who invented pop-up ads has apologized to the world for creating one of the Internet's most hated forms of advertising.

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"Hello" didn't become a greeting until the #telephone arrived.

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Still-beating hearts of live cobras are eaten as a delicacy in Vietnam.

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The world's largest gold bar weighs 250 kg (551 lb).

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Sea otters have skin pockets where they keep their favorite rocks to use for crushing seashells.

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Chimpanzees can identify each other from pictures of their butts.

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Every minute, more than 100 hours of video are uploaded to YouTube.

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Humans spend a third of their life #sleeping. That's about 25 years.

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In 1891, Juan Vucetich, an Argentine Police Official, made the first criminal fingerprint identification.

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The Tetris theme song is actually a 19th-century Russian folk song called "Korobeiniki."

[It Must Be Known! @ItMustBeKnown]

The largest pretzel in the world weighed 842 lbs. #NationalPretzelDay