How a Uranium Hunter Sniffs Out Nuclear Weapons
When geologist and nuclear security researcher Rodney Ewing left the University of Michigan for Stanford in 2014, he left some of his belongings back in the Midwest. Hundreds of his belongings, actually. All of them radioactive. He wasn't trying to poison anybody: It was a collection of minerals from around the world\u2014some unearthed himself, some donated\u2014each with uranium enmeshed inside.