spreading in china. so far 24 people have gotten sick with the virus. seven of them have died. the latest victim was a 64-year-old man who died in shanghai. all of the city's live poultry markets have been closed since saturday due to the crisis. it could be a scientific breakthrough in transforming one of the top food indulgences into something healthy. british chemists discovered how to cut the fat content in chocolate by a half. replacing cocoa butter and milk fats with droplets of fruit juice. researchers say the healthier chocolate tastes rich, slightly fruity. typical types are an indulgence because of the saturated fat. you know, i just say have the real stuff once in a while. fruity chocolate? >> sounds good. >> like to try it anyway. a couple of kids who may end up in detention for this. but they definitely get an "a" for creativity. and this is our "favorite story of the day." >> canadian students came up with the bright idea to use