Bullet proof vests, fire escapes, windshield wipers, and laser printers were all invented by women.
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The weight of air in a milk glass is about the same as the weight of one aspirin tablet.
63
Less than 3% of the water produced at a large municipal water treatment plant is used for drinking purposes!
24
Coins usually survive in circulation for about 30 years.
66
When glass breaks, the cracks move faster than 3,000 miles per hour. To photograph the event, a camera must shoot at a millionth of a second!
114
Sunflowers can be used to clean up radioactive waste.
17
The hands of the clock on the back of the $100 bill are set at approximately 4:10.
72