To understand how essential critical minerals are to our world, we turn to a case study: cobalt. This mineral is proving key to the future of green energy, defense and high tech manufacturing — not to mention electric vehicles. But cobalt has its challenges. Hosts Luiza Savage and Ryan Heath look at China’s dominant role in global cobalt mining and the serious problems that can arise if other countries can't get enough supplies. Luiza Savage is the host of "Global Translations". Ryan Heath is a host of "Global Translations".  Annie Rees is a producer for POLITICO Audio.  Kara Tabor is a producer for POLITICO Audio.  Jenny Ament is the senior producer for POLITICO Audio.  Irene Noguchi is the executive producer of POLITICO Audio. Nedal T. Nassar is Chief of Materials Flow Analysis Section at the U.S. Geological Survey. Bryce Crocker is the CEO of Jervois Mining Aimee Boulanger is the executive director of Initiative for Responsible Mining Assurance (IRMA) And check out the other POLITICO newsletters:  Global Translations: https://www.politico.com/newsletters/global-translations Morning Energy: https://www.politico.com/morningenergy/ The Long Game: https://www.politico.com/newsletters/the-long-game China Watcher: politico.com/china Morning Tech: https://www.politico.com/morningtech/