Rhiannon Hoyle, a WSJ mining and commodities reporter and expert on rare earth elements, joins to discuss the critical role these materials play in electric vehicles. She highlights the environmental and geopolitical challenges of rare-earth mining, particularly China's dominance in the market. Hoyle shares how automakers like Tesla and GM are racing to develop new motors that avoid these toxic materials without sacrificing efficiency. The conversation also touches on innovative solutions and ongoing research aimed at revolutionizing the EV industry.