>> this morning on "world news now," highway horrors. bus passengers killed on busy american roads. >> it was just havoc. there was people covered in blood and just mayhem everywhere, just a mess. >> the powerful impact at two crash scenes and the rush to rescue survivors. disturbing developments in the boston terror investigation. what we're learning about the suspect, his weapon and why he may have been planning to target a woman in new york. and later speaking out. members of josh duggar's family made famous by their tv show offering strong reactions to the allegations of sexual abuse. >> josh has done some very bad things. >> new details about the victims as we hear from the head of the family known for "19 kids and