Sound travels fifteen times faster through steel than through air.
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Scientists are now able to grow 'beating' heart tissue in a lab!
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A cubic yard of air weighs about 2 pounds at sea level.
31
Scientists aren't sure what color dinosaurs were.
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One gallon of used motor oil can ruin approximately one million gallons of fresh water!
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Dr.Jonas Salk, the man who came up with the cure for polio, didn’t patent the drug. This made the drug more affordable to the general public, and he lost out an an estimated $7 billion dollars for himself.
41
A 'jiffy' is an actual unit of time for 1/100th of a second!
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