› added 1 year ago

38

TIL That Oganesson-118 atom is very unstable and since 2005 only 5 atoms have been detected of the isotope oganesson-294. It's most stable isotope has a half life of 0.89 milliseconds.

Read more wikipedia.org

via reddit.com

Z8p7D TIL That Roman Polanski played a French Policeman in Rush Hour 3, Directed by Brett Ratner
v6MD TIL both North Korea and Cuba vehemently denounced the September 11th Attacks, despite their previous hostilities towards the U.S.
DmAv TIL that from 1936-1966, black Americans going on a road trip often used a “Negro Motorist Green Book” that would list businesses that sold to black people. The book helped travelers avoid one of 10,000 “sundown towns”, places it was the law that all non-whites had to leave the town by sundown.
wLoao TIL: Mercury was required for felting fabrics, especially hats. Hatters in the 1800’s had chronic mercury toxicity that caused mental instability thus dubbing the term “mad hatters disease” or “mad as a hatter”- and was the primary plight that Louis Carroll developed the mad hatter character around.
NXEk6 TIL The first Postal Letterbox in the US began as a hollowed out tree on Long Island in the year 1787