Cycles in the Earth's climate, caused by changes in its relationship with the Sun.
The Milankovitch Cycles
Fact of the Day
The average height of the average male in the twelfth century was five-foot-seven.
Quote of the Day
"I have no political ambitions for myself or my children.
"
~ Joseph P. Kennedy
On This Day
1483 The proposed date of the coronation of the 12-year-old son of Edward IV, Edward V. The coronation never happened because his uncle, Richard, declared him illegitimate and became king himself.
1611 Navigator Henry Hudson was cast adrift after a mutiny in Hudson Bay. It was the last time he was seen alive.
1861 A huge blaze started on Tooley Street's Cotton Wharf, which was later compared to the Great Fire of London, caused £2 million worth of damage, and killed James Braidwood, superintendent of the London Fire Engine Establishment.
1941 The Nazis launched Operation Barbarossa against the Soviet Union, with the largest invasion force in the history of warfare.
