. >> alana morisette is back. how do you turn an album into a play? or a musical? we'll tell you about it coming up. first, a look at today's forecast. ♪ of the cross i bear ♪ ♪ >> announcer: "world news now" weather brought to you by my pillow. >>> here is something you dent see often. this >>> here is something you don't see often. this is a horse running around on the wessi new york city. goldy is normally a carriage horse. but apparently got loose and decided to take herself on a tour of the upper west side. eventually she turned around and came back to the stable. her caretaker says she wasn't tired enough. wanted more exercise for the day. >> yes. all safe in the end for her. and a new study find that hospital emergency rooms have been jacking up prices by as much as 1300%. researchers at johns hopkins analyzed billing records of 12,000 e.r.a. doctors across the country. they found on average. adult patients are charged 340% more than what medicare pays for treatment. ranging from stitches to ct scans. the biggest markups are made to minorities and uninsured