this morning on "world news now," dangerous cold. this morning on "world news now," dangerous cold. the arctic blast freezing a big part of the nation on this christmas eve. hazardous conditions after a deadly ice storm. family fight. rally around a california girl declared brain dead after a routine operation. the battle moves from the hospital to the courtroom. actress inspiration. christina applegate's role in "anchorman 2." her new hairstyle for the sequel. you maybe surprised to hear who inspired it. and never again. what superstar mariah carey is refusing to do. it has nothing to do with her recording contracts. it is coming up in the christmas eve edition of "the skinny" on this tuesday, december 24th. >> announcer: from abc news, this is "world news now" with john muller and diana perez. >> merry christmas eve,