'QED': literally means 'what was to be shown', where a fact or situation demonstrates the truth of a theory or opinion.
Quod erat demonstrandum
Fact of the Day
Bishop Meinward of Paderborn was apparently in the habit of having women dragged on their bottoms across his garden to clear it of weeds.
Quote of the Day
"I have offended God and mankind in not having laboured at my art as I ought to have done "
~ Leonardo da Vinci, speaking during his final illness to Francis I
On This Day
1016 Cnut defeated Edmund Ironside at the Battle of Assandun, forcing Edmund to make a peace with the invading Danes: he got to keep Wessex, but the rest of England came under Danish rule. A month later, he had died of 'natural causes' so Wessex, too, went to Cnut.
1216 King John died of dysentery. He was succeeded by his nine year old son, Henry III.
1867 The US officially took possession of Alaska. It wasn't a popular decision at the time.
1922 The BBC was founded.