After picking up this latest round of pings, authorities say they are optimistic they will find Flight 370. Investigators are narrowing the search zone. If the missing plane is there, it could be 13,000 feet below the surface in one of the most challenging environments on earth. Anderson has a closer look.
Gary Tuchman reports on a company that is using cutting edge technology to map the ocean floor.
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