In many countries, urine was used as a detergent for washing.
17
Blue light fends off drowsiness in the middle of the night, which could be useful to people who work at night.
240
Coins usually survive in circulation for about 30 years.
66
The most children born to one woman was 69, she was a peasant who lived a 40 year life, in which she had 16 twins, 7 triplets, and 4 quadruplets.
852
Seaweed can grow up to 12 inches per day!
59
Water is actually naturally blue.
48
It has been calculated that every 2 minutes, we take more pictures than all of humanity in the 19th century.
13