Professor Robert Rosner on the Security and Health Risks of Iridium-192

Harris Public Policy Professor Robert Rosner is featured on Live Science to discuss radioactive material, known as Iridum-192, reportedly stolen from an oil field in Iraq to produce "dirty bombs."

"Iridium-192 is also often used in radiation therapy," said Rosner. "For instance, in a technique called Gamma Knife surgery, a focused beam of gamma-rays is used to directly cut or destroy tumor cells."

Full coverage is available at Live Science.