› added 10 months ago

91

TIL: China doesn't know how to make a ballpoint pen.

Read more forcedistancetimes.com

via reddit.com

AwLa TIL Nikolai Tesla patented a one-way-valve with no moving parts in 1920 (Patent US1329559)
W7y6o TIL the paintings of Washington crossing the Delaware were by a German artist, and the original was destroyed by Allied bombing in 1942.
v1PGR TIL that there is a genetic basis for sneezing when you are exposed to sunlight
Brp6d TIL powdered wigs became popular to hide syphilis symptoms
AND64 TIL about bi-paternal twins in which a woman becomes impregnated by two different men, resulting in fraternal half-siblings