In 1518, a "dancing plague" struck Strasbourg, Alsace, whereby hundreds of people danced fervently in the streets over the period of a month. Some suffered heart attacks or strokes, and many others died from sheer exhaustion. It remains unexplained.
19
The last time American Green cards were actually green was 1964.
60
The time interval from first sighting of the iceberg that sank the Titanic to impact was a little over 30 seconds.
105
In the 1830s, a Greek prime minister tried to spread the potato in Greece but people weren't interested so he put armed guards in front of shipments of potatoes so people would think they were important. People then started stealing these potatoes so much that the crop spread to all of Greece.
29
During the Cold War, the US had planned to detonate a nuclear weapon on the moon.
25
Clocks made before 1660 had only one hand - an hour hand.
41
During the 1600's, boys and girls in England wore dresses until they were about seven years old.
63
The first ever patent in the UK was Aaron Rathbone & Roger Burges, Map makers in 1618!
15