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How do you topple a tyrant or popularize a foreign cuisine? A study on network theory finds that the tipping point needed for a committed minority to win over the majority is just 10 percent.  
Evidence that neogenesis—spontaneous regrowth of hair in dormant follicles—is widespread in the animal world has spurred researchers around the globe to look for genetic solutions for baldness.   
More and more jobs are increasingly confined to sitting at a desk all day. This isn’t how it used to be. Americans are burning fewer calories than ever at work—so what can be done?