Fiery charges: Romney, Santorum assail each other (AP)

Poll: Obama benefitting from improving economy (AP)

Shelling kills 2 Western journalists in Syria (AP)

Newark mayor: NYPD Muslim files 'deeply offensive' (AP)

Jury: 26 years total for former U.Va. lax player (AP)

FACT CHECK: Errant claims on auto bailout, taxes (AP)

Police charge 2 in death of Ala girl forced to run (AP)

Teenage girl dies after inhaling helium at party (AP)

Cowell: 'X Factor' wants 2 female judges, 2 hosts (AP)

Man's childhood comic collection fetches $3.5M (AP)

Santorum takes heavy fire in Arizona Republican debate (Reuters)

Obama urges corporate tax cut, closing loopholes (Reuters)

Assad forces renew barrage on Syria's Homs (Reuters)

Fitch downgrades Greece on debt swap plan (Reuters)

Congress members threatened with biological attack (Reuters)

Judge strikes down law mandating sale of (Reuters)

Home resales at 1-1/2 year-high, supply falls (Reuters)

Iran defiant as U.N. nuclear talks fail (Reuters)

Could Rick Santorum super PAC do more harm than good? (The Christian Science Monitor)

Stolen Valor Act at Supreme Court: Is lying about being a hero a right? (The Christian Science Monitor)