The Massachusetts Fire Marshal's Office is investigating the cause of the fire but said it does not appear to be suspicious.
The incident comes just one day after a Palestinian teen stabbed a young Israeli-American to death in her bed.
Two experts found more than 570 clinics offering "stem cell" treatments, many with little or no proof they work or are even legal.
TODAY's Dylan Dreyer pinpoints potential trouble spots where traveling will be toughest.
A woman left her purse inside her car while she was filling up her gas tank in Los Angeles.