CHAPEL HILL -- Students from poor families will be able to attend UNC-Chapel Hill for free and incur no debt under a major financial aid initiative announced Wednesday. The program, dubbed the "Carolina Covenant," requires that the low-income students work 10 to 12 hours a week in campus jobs during their four-year college careers. The university will cover total college costs through a combination of federal and state money, university and private grants, and scholarships. No loans would be necessary. "College ought to be affordable, ought to be possible, for everyone who can make the grade, regardless of family income,"...