Images: New radiation warning--run for your life

The International Atomic Energy Agency and the International Organization for Standardization want you to know when it's time to panic by adding a person running and a skull and crossbones to its radiation warning symbol.

The new symbol is a result of a five-year study in 11 countries around the world to develop a symbol that will scare people of all ages, nationalities and education levels. The test group included 1,650 people.

The symbol is to be used to identify dangerous sources of radiation such as food irradiators, teletherapy machines for cancer treatment and industrial radiography units. It will not be visible under normal use but will be seen if someone tries to disassemble a unit containing radioactive materials. So the next time you see this symbol--RUN.