Is there really $500bn of Rare Earths in Ukraine?

As part of the fast-moving argument over US military support to Ukraine, the US demanded $500bn worth of access to what was variously reported as Ukraine’s rare earths or rare metals or rare minerals. But is there that amount of minerals in the ground?Presenter: Tim Harford Producer and Editor: Richard Vadon Studio Manager: James Beard Production Co-ordinator: Brenda Brown