› added 11 years ago

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TIL In the U.S. an estimated 300,000 deaths per year may be attributable to obesity.

Read more surgeongeneral.gov

via reddit.com

yVAmX TIL in WWI the Secret Service discovered that semen was found to be useful as invisible ink with the motto "Every man his own stylo." It was eventually discontinued because of the smell.
Ywed TIL a domestic sheep’s wool will just keep growing and growing forever, if humans don’t cut it off
Bg1GD TIL about the Goodyear Inflatoplane, an inflatable aircraft designed to serve as a rescue method for airmen trapped behind hostile lines. When unloaded, it weighed a mere 102 kilograms, and the engine on the smallest variant output a mere 40 horsepower, comparable to a small motorcycle's engine.
oBkRK TIL that the version of "A Charlie Brown Christmas" most people have seen is an edited version produced for the 1966 rebroadcast. The 1965 version was considered lost media until 2018, when an original film reel was discovered and its contents were uploaded to the internet
9kLB TIL there’s a valve in fetal hearts that diverts blood away from the lungs while in utero. It begins closing at the first breath as the baby gets oxygen from it’s own lungs for the first time.