Between 2007 and 2012, Bill Gates gave away $28 billion; saving 6 million lives.
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Yu Youzhen, a Chinese millionaire, works as a street sweeper for the sanitation department to set an example for her children.
11
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.
13
Putting your car alarm remote under your chin or beside your head increases its range.
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The US national public health institute, Centers for Disease Control and Prevention, has an actual plan in case of zombie invasion.
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