The key to a cleaner energy future is batteries. Last week, General Motors confirmed plans for a new battery production plant somewhere in the U.S. And last month, President Joe Biden ordered a review of the domestic supply chain for large-capacity batteries. Right now, most of the materials for making batteries come from other countries. But many of those metals, including lithium and cobalt, can be found here in the U.S. Molly speaks with Chris Berry, a strategic-metals consultant and president of House Mountain Partners.