› added 6 months ago

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TIL that human body temperature has been declining by 0.05 degrees F each decade

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via reddit.com

0xmR TIL in The Big Lebowski, The Dude’s line, “The Dude abides,” comes from Ecclesiastes 1:4, “One generation passes away, and another generation comes: but the earth abides forever”–a reference to how the Dude, much like the Earth, can weather change and chaos around him, but still remain the same.
OoMo6 TIL the sunscreen rating SPF 15 means 1/15th of the UV-B radiation is not blocked. SPF 30 means 1/30th, etc.
NXpKb TIL: The pacemaker was invented when an engineer accidentally pulled the wrong resistor from a box and realized it could regulate a heart.
9YXaG TIL: Among the world's oldest living beings was a tree at least 4800 years old. With irony, "Prometheus" The Tree (AKA study plant WPN-114) finally was cut down in 1964 with involvement from a grad student studying long-living trees and the United States Forest Service. (natural,non-cloned beings)
ONNX TIL Abraham Lincoln’s son Robert was present or near for the Assassinations of three America presidents (his father, Garfield and McKinley). He once refused a presidential invitation saying “I’m not going… because there is a certain fatality about presidential functions when I am present”