Tuberculosis is the most common fatal infectious disease in the world today (2009)
How much spit do you produce in a day?
Normally, 1 or 2 liters of saliva are produced per day in an average adult.
How many days of their life do women spend on makeup?
During her entire life, a woman spends 630 days applying make-up and 170 days removing it.
How much does the length of the day increase?
Every century, the length of the day increases by 1/500th of a second because the moon slows down the Earth’s rotation slightly.
