Science Cafe: Our Radioactive World

A year ago, the tsunami-related meltdown at the Fukushima Daiichi nuclear power plant in Japan caused a radiaton release aniut 12,000 times greater than Three Mile Island. Monday on a Science Cafe edition of "The Sound of Ideas," we'll look at the risks of exposure to both high and low level radiation. We'll define radiation, explain how it causes damage and discuss ways in which the medical community harnesses radiation to fight cancer.