By SARAH SKIDMORE SELL, The Associated PressAbout half of young Americans expect to be financially better off than their parents, according to a new poll, a sign that the dream of upward mobility is alive but somewhat tempered. The poll, by The Associated Press-NORC Center for Public Affairs Research and MTV, found that half of 15- to 26-year-olds think they eventually will be better off than their parents in terms of household finances.Read more on NewsOK.com