Trillions of potato-sized rocks scattered across the deep ocean floor are rich in metals such as cobalt and copper—making them a target for mining companies eager to fuel the clean-energy transition. But recent research suggests these rocks may also be supporting marine life in ways scientists are only beginning to understand. In this episode, scientist and journalist Clare Fieseler and filmmaker Jason Jaacks join host Rachel Feltman to explore the surprising science behind these deep-sea rocks and the environmental stakes of harvesting them.
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<a href="https://www.scientificamerican.com/video/polymetallic-nodules-a-source-of-rare-metals-may-hold-the-secrets-of-dark/">A ‘Dark Oxygen’ Mystery Is Unfolding at the Ocean Bottom—But Undersea Mining Giants May Soon Move In</a>
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Science Quickly is produced by Rachel Feltman, Fonda Mwangi, Kelso Harper and Jeff DelViscio. This episode was edited by Alex Sugiura. Shayna Posses and Aaron Shattuck fact-check the show. The theme music was composed by Dominic Smith. Learn more about your ad choices. Visit <a href="https://megaphone.fm/adchoices">megaphone.fm/adchoices</a>

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