The earth is approx. 6,588,000,000,000,000,000 tons.
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One third of the electricity produced on earth is used to power electric light bulbs!
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According to studies, men change their minds two to three times more often than women.
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Scientists are now able to grow 'beating' heart tissue in a lab!
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Hot water can freeze faster than cold water.
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When you walk down a steep hill, the pressure on your knees is equal to three times your body weight.
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For every gallon of sea water, you get more than a quarter pound of salt.
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One ragweed plant can release as many as one billion grains of pollen!
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