Hot to Handle (1966)

Soon, a man's failing heart may be replaced by an artificial heart, powered by a radioactive source within the body. A life saved by radiation. Today, in an experiment on trees, in America, the heart of a forest has been killed, life destroyed by radiation. The Two Faces of Radiation. This programme answers four questions: What is radiation and how can it be used to benefit man?, If it is misused, what are the dangers to man, animals, and plant life? and How is the intensely radioactive waste from our power stations disposed of? Do living creatures have any defense against radiation?