Talia Lakritz/Business Insider
Profile Boats/supplied/RNZ
Courtesy of Christoper Willson
Profile Boats/supplied/RNZ
Underwater welders have one of the world's riskiest jobs. We followed welders in Indonesia who dive with minimal protection in polluted waters to build piers for petrochemical plants that are booming across the country.
Morteza Nikoubazl/Getty Images
Naval History and Heritage Command
A former US intelligence officer believes he may have found the wreckage of Amelia Earhart's plane. His team used a $9 million submersible that picked up a sonar image during a 100-day expedition.