NEW YORK/LONDON :Global stocks lost ground while U.S. Treasury yields edged higher on Tuesday after data showed the American economy remained resilient. U.S. services sector activity accelerated in December, beating expectations, while a measure of prices paid for inputs rose to near a two-year high, according to data from the Institute for Supply Management. Labor Department data also showed U.S. job openings unexpectedly increased in November although a softening in hiring pointed to a