In 1999, Harvard physicist Lene Hau was able to slow down light to 17 meters per second and in 2001, was able to stop light completely.
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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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Pierre Jaquet-Droz, a watchmaker, 240 years ago invented a robot that could write, and the parts could be interchanged to say whatever you want.
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The Prince Charle Cinema in London has volunteer "ninjas" that hush obnoxious moviegoers.
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In Mexico, artists can pay their taxes using artwork that they create.
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