December 4thOn this day in
1952 a deadly
smog created by the smoke soot and sulfur dioxide from the factories, cars and coal fires in local homes begins to hover over
London which continues for four days, leading to the deaths of at least 4,000 people.

Also on this day in
1872, a crew from the
Dei Gratia, a small British brig, spot the
Mary Celeste at full sail near the Azores Islands in the Atlantic Ocean. The ship was seaworthy, its stores and supplies were untouched, but not a soul was onboard.
The fate of her crew has been the subject of much speculation. Theories range from alcoholic fumes to underwater earthquakes and waterspouts, along with paranormal accounts such as aliens, sea monsters and the Bermuda Triangle. The Mary Celeste is often described as the archetypal
ghost ship, since she was discovered derelict without any apparent explanation.
