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** FILE ** The Xenex "robot" uses pulse xenon to deliver UV light throughout patient rooms, operating rooms (ORs), equipment rooms, emergency rooms, intensive-care units (ICUs) and public areas to destroy viruses, bacteria and bacterial spores in just 5-10 minutes per room. (Photo: Business Wire)

** FILE ** The Xenex "robot" uses pulse xenon to deliver UV light throughout patient rooms, operating rooms (ORs), equipment rooms, emergency rooms, intensive-care units (ICUs) and public areas to destroy viruses, bacteria and bacterial spores in just 5-10 minutes per room. (Photo: Business Wire)

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The biggest villains in sports

Ray Rice is just the latest famous athlete to draw the ire of the American public. Sports stars haven’t always acted as role models — both on and off the field.