good morning. i'm john muller. >> and i'm diana perez. here are some of the top headlines we're following on "world news now." president obama's approval ratings appear to be in a free fall with the number of americans hitting a record high. much of it is a direct reflection with frustration with obama care. full details in a moment. george zimmerman appears before a florida judge today on assault charges. his girlfriend called 911 to report that he pointed a shotgun at her during an argument. and students at princeton university will be able to get a meningitis vaccine next month. campus administrators approved the plan after an outbreak on campus even though this vaccine