In many countries, urine was used as a detergent for washing.
17
There are approximately three million shipwrecks on the ocean floor, worth billions in value and treasure.
22
A lump of pure gold the size of a matchbox can be flattened into a sheet the size of a tennis court.
140
The first household refrigerators cost about $16,000, in today's money!
47
If left alone, 70% of birthmarks gradually fade away.
193
There are 86,400 seconds in a day.
110
A new baby usually deprives each of it's parents around 350-400 hours of sleep in the first year. That is one entire nights sleep per week, per parent.
194