Mankind has mined the earth's surface for thousands of years. Now there's a furious race to find even more metal that will enable the world's energy transition away from fossil fuels. In Papua New Guinea, one company is digging what may become the world's first operational deep-sea mining site. Videographer Edward Kiernan and special correspondent Willem Marx report. PBS News is supported by - https://www.pbs.org/newshour/about/funders