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TIL Arsenic is commonly used in the treatment of a type of leukemia

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RJg8 TIL that vampire bats will die if they can’t find blood for two nights in a row. Luckily, generous well-fed bats will often regurgitate blood to share with others, in exchange for grooming. This has been noted by many naturalists as an example of reciprocal altruism in nature.
Wkl4X TIL Neptune is the windiest planet in our solar system with wind speeds of up to 1,500 MPH, Uranus produces wind speeds of 560 MPH putting it in second place.
NKV8 TIL that avocados used to be eaten by giant ground sloths and were saved from extinction by humans
KObA9 TIL of Lost Bird, a Lakota child who was found under the frozen corpse of her mother after four days in a snowbank, adopted by a General, and lived a brief, terrible life. Later buried at Wounded Knee.
XEkoR TIL the monarch butterfly’s life span is 2 to 6 weeks, except every 4th generation lives from 6 to 8 months so they can travel all the way down from Canada/USA to Mexico and back