The life expectancy in 1900 was just 47 years.
49
The time interval from first sighting of the iceberg that sank the Titanic to impact was a little over 30 seconds.
105
Until the nineteenth century, solid blocks of tea were used as money in Siberia.
80
Modern humans first appeared about 200,000 years ago, but record keeping didn't begin until about 6,000 years ago. That means about 97% of human history is lost.
21
There's no evidence that pirates made people walk the plank.
151
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
