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Columbia Business School’s Professor Gernot Wagner spoke with CNBC reporter Sam Meredith about the rapid rise in rare earth and critical mineral stock prices as countries race to secure key materials for clean-energy technologies. Wagner explained that geopolitical tensions, supply-chain constraints, and accelerating demand for batteries and renewable infrastructure have created unusual volatility across mineral markets. He emphasized that while price spikes can attract investment, they also expose buyers and governments to long-term risks, underscoring the need for sustainable mining practices and diversified supply strategies.
