In many countries, urine was used as a detergent for washing.
17
Bullet proof vests, fire escapes, windshield wipers, and laser printers were all invented by women.
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The "Cobra Effect" is where a solution for a problem actually makes the problem worse.
21
Playing Tetris after a traumatic event can prevent the development of traumatic memories and reduce the chance of having flashbacks.
30
A sneeze travels out your mouth at over 100 m.p.h.!
29
More than 10% of the world's salt is used to de-ice American roads.
54
The Band-Aid was originally made for the inventor's wife, who often cut and burned herself while cooking.
6
When withdrawing money from an ATM, the 'whirring' sound before your money pops out is actually a recording. The actual mechanism is so far back that you can't hear it.
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