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TIL that banknotes were invented by Chinese in the 6th century for replacing coins as burial money. They started using it as currency in 812. The oldest conserved banknote is called "Kuan", made of mulberry tree bark, and dates from 1375.

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OQdg TIL a Norwegian rockslide (~8000 years ago) is believed to have created a tsunami so powerful, it turned Britain from a European peninsula into an island.
nWpvG TIL About a fun boardgame about clues and colors called Hues and Cues from the Let's play a game foundation
9w7QG TIL Adolf Hitler was worried Kilroy was the codename of a high-level Allied spy & Stalin was terrified when he found "Kilroy was here" written in the VIP bathroom. The first modern instance of a meme as counter intelligence.
D1mrV TIL that locusts are actually grasshoppers. In certain conditions, their behavior changes to a solitary and timid grasshopper to a gregarious locust. This is due to the release of serotonin in their body.
YprVv TIL Marine Iguanas have the distinct ability to "sneeze" out salt with the use of special glands they possess. This is due to the mass amount of saltwater they ingest from the ocean.