this area in the southern indian ocean. a sign of hope for the searchers? >> certainly there are clues that have to be verified, though. we've been here before. we need solid evidence. something that will link it directly to flight 370, jim? >> no question. as you know, the planes that have gone to those areas have found nothing when they've take an closer look. after the break more "reliable sources" with cnn's brian stelter. it's a growing trend in business: