Scientists have developed a 'hangover-free' beer that has electrolytes, making it more hydrating and refreshing.
4
There are glasses which allow a red-green color-blind person to see colors the way everyone else does.
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Some nursing homes in Germany have fake bus stops to keep Alzheimer's patients from wandering away.
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Sony researchers have developed a refrigerator that only opens when you smile.
9
Elephants are among the most emotional creatures in the world - they have even been known to rescue other animals, such as trapped dogs.
25
In 2011, a couple bought a box of textbooks for $10. Inside, they found a 25-cent bill signed by the president of the Republic of Texas, Sam Houston, and subsequently sold it for $63,250.
13