TIL that during the Western Schism of the Catholic Church, there was a cardinal appointed by Antipope Benedict XIII who split with the others and, acting as the entire college of cardinals, elected someone Pope all by himself; when that guy died, he elected himself Pope all by himself.
TIL In 2001 Shaquille O'Neal made a hip-hop album produced by Dr. Dre and others, that has never been released.
TIL there are at least 17 satellites like the Hubble Space Telescope. They are spy satellites pointed at Earth and Hubble is basically built from spare parts.
TIL of the 67 people who have served as President of Bolivia, 13 (19%) died by tragic means. 5 died in office, 3 by assassination and 2 of the 5 who died were suspected assassinations. A further 8 former presidents were assassinated in various ways after leaving office.
TIL Between 1935-44, William Boeing and his wife set aside land outside Seattle city limits for subdivision and placed covenants to enforce segregation, forbidding properties from being "sold, conveyed, rented, or leased in whole or in part to any person not of the White or Caucasian race."