› added 5 months ago

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TIL a CT scan exposes you to about 100x the radiation of a chest x-ray, while a PET scan exposes you to about 250x as much.

Read more cancer.org

via reddit.com

J7w1 TIL that soldiers erroneously believed that the Ace in a pack of Bicycle playing cards was a symbol of death to the Viet Cong army and would scatter them around the jungle.
mXNy TIL that the Star Spangled Banner’s melody was based off a British drinking song called “To Anacreon in Heaven”.
vPxLB TIL David Bowie declined the honor to be knighted twice: “I seriously don’t know what it’s for. It’s not what I spent my life working for.”
7rmVp TIL the Lakota tribe conquered the Black Hills from the Cheyenne tribe in 1776
8abvK TIL that the font GILL SANS was created by and named after Eric Gill, a famous British designer who admitted to sexually abusing his daughters, sisters, and a dog.