Digital Photography Directory

AP - An aggressive Mitt Romney repeatedly challenged Republican rival Newt Gingrich Thursday night in the final debate before next week's critical Florida primary, demanding an apology for an ad saying he harbors anti-immigrant sentiments and ridiculing the former House speaker's call to colonize the moon.

AP - In corrections systems nationwide, officials are grappling with decisions about geriatric units, hospices and medical parole as elderly inmates — with their high rates of illness and infirmity — make up an ever increasing share of the prison population.

AP - Detractors say the F-35 stealth fighter, the costliest military plane ever, is destined to go down as one of the biggest follies in aviation history. But it may have found a savior: deep-pocketed U.S. allies hungry to add its super high-tech capabilities to their arsenal.