Most dust particles in your house come from dead skin.
48
Oxygen, carbon, hydrogen and nitrogen make up 90% of the human body.
118
The weight of a carat (200 milligrams), standard unit of measurement for gemstones, is based on the weight of the carob seed.
51
According to studies, men change their minds two to three times more often than women.
72
4.5 pounds of sunlight strike the Earth each day.
27
A 'jiffy' is an actual unit of time for 1/100th of a second!
66
Scientists are now able to grow 'beating' heart tissue in a lab!
162
Each day, up to 150 species of life become extinct.
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