December 21 – On This Day

Historical Events

  • 1898 – Marie Curie and Pierre Curie discover the radioactive element radium. Encyclopedia Britannica
  • 1913 – The first newspaper crossword puzzle is published in the New York World. Wikipedia
  • 1988 – Pan Am Flight 103 is destroyed by a terrorist bomb over Lockerbie, Scotland — one of the deadliest aviation terror attacks on British soil. Wikipedia

Notable Birthdays

Observances & Facts

  • Winter Solstice (in the Northern Hemisphere) — the shortest day of the year, marking transition toward longer days. Wikipedia
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