and join the myboniva program. join today and get a free month of boniva at myboniva.com, or call 1-877-287-9140. jenna: what we are about to show you is incredible, a powerful gas explosion rocking philadelphia. utility workers investigating reports of a gas odor when this happened. that blast kill one person and forcing dozens from their home. harris has the store row from the breaking news desk. >> reporter: the odor is treated so that people can actually detected. they knew they had a problem in this area. ahead of the explosion they