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TIL a bit of composite material could greatly inhibit the spread of germs among air travelers, who come in contact with some 3 billion others annually.

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wLNb6 TIL using “traditional” swear words increases pain tolerance by 33%
E15wW TIL The Russian Empire spanned into Alaska, Northern California, and parts of Hawaii before selling its colonial possessions to the US in 1867.
kOB01 TIL that, in 1943, four boys in Worcestershire found a skeleton inside a tree trunk, with its hand some distance away. In 1944, graffiti was found nearby saying "Who Put Bella in the Wych Elm", along with other messages. Neither the skeleton nor the writer of the graffiti has ever been identified.
9wMnB TIL that one cubic centimeter of the human body has a higher energy output then one cubic centimeter of the sun.
5wjr TIL that Bruce Springsteen’s “Born in the USA” is about the negative effects of the Vietam War on Americans, but is often misunderstood to be a patriotic or nationalistic anthem