Authorities say a cell tower picked up a signal from the phone belonging Flight 370's first officer about a half hour after the plane disappeared from radar. Did other cell phones on board also register signals? Did other cell towers pick up any signals from Flight 370? Pamela Brown looks into these questions.
Anderson Cooper goes beyond the headlines to tell stories from many points of view, so you can make up your own mind about the news. Tune in weeknights at 8 and 10 ET on CNN.
Questions or comments? Send an email
Want to know more? Go behind the scenes with