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TIL an average-sized 1 km3 cumulus cloud (the white fluffy ones) weighs approx. 551 tons or 1.1 million pounds. They float because the surrounding dry air is denser than the cloud.

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oBv7K TIL that while not enforceable, the U.S. has a flag code which advises Americans on proper flag usage. Examples include, No marking or changing the flag's colors, It must be lowered at night unless properly lit, a flag may not be used on a float without a pole, and no flag apparel of any sort.
wLro TIL that Bella and Edward’s relationship in the Twilight series meets all fifteen criteria set by the National Domestic Violence Hotline for being in an abusive relationship.
KYMgG TIL the the color "mummy brown" was made from ground up Egyptian mummies. This was true up until the mid 20th century.
4XMLJ TIL The iconic Slinky toy was created during the development of a device designed to stabalise naval equipment during rough seas. Richard James knocked one of his springs off a bookshelf and it "stepped' down a pile of books.
08Yj TIL a Greek wrestler once lifted a calf everyday for 4 years before carrying the full-grown bull the length of a stadium, before killing and eating it in a single day.