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TIL that sunflowers are capable of cleaning heavy toxins such as arsenic and even uranium from soil.

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OoaLL TIL that rescue dogs tasked with finding survivors at Ground Zero quickly became depressed because they weren't able to find any, causing their handlers to hide in the rubble and give the dogs someone to find.
6EGv8 TIL that Operation Cherry Blossoms at Night was a 1945 plan developed by Shirō Ishii to wage biological warfare upon civilian population centers in Southern California in the United States during the final months of World War II, using plague fleas from unit 731.
DNrg TIL that Stanley Lieber used the pseudonym, Stan Lee because he was afraid that associating his legal name with comic books would harm his writing career.
wLJ87 TIL When dealing with persons in crisis, police negotiators need to keep the subject talking. However, the word “talk” should be avoided, as it often gets rejected by the subject: whereas “speak” seems to work in real crisis conversations.
YpB0x TIL in complete darkness we see a specific color called "Eigengrau" that's a form of dark gray