This episode examines Iowa's groundwater challenge as a major limestone quarry seeks to increase withdrawals from the Jordan aquifer, raising concerns from residents and environmentalists. We also highlight the ongoing fight in Arizona over sacred lands threatened by mining, underlining the intersection of indigenous rights and environmental justice. Plus, learn about global ocean acidification’s alarming effects on marine life. Sources: Inside Climate News, Nature Climate Change, Yale Environment 360, Semafor, The Guardian.