Mr. Miller-Jones introduces this program on the dangers of radioactive fallout, the third in a series of exchanges between Baltimore, Maryland's station WAAM and Great Britain's BBC. Dr. Kruse explains that current incineration of radioactive waste could be detrimental to people's health if safe gas and ash levels are exceeded. Dr. Geyer and Mr. Talboys discuss the effectiveness of laundering of radium-tainted clothing. To improve removal of radioactive materials from clothing, combinations of several variables must be considered: isotopes, fabrics (fiber, weave, treatment), detergents, concentrations, water temperatures, agitation degree, and time. Dr. Renn then examines the problems of releasing radioactive waste into sewage treatment plants. Some waste, such as radiophosphorous, is easily absorbed by bacteria in the system; others could be captured by experimental trickling filters or the aerated sludge process, but the sludge must then be disposed.

Telegrams from educators and scholars mark the third anniversary of the Johns Hopkins Science Review. Dr. Abel Wolman summarizes the history of methods of acquiring pure water and the science of sanitary engineering. Chlorine was discovered to be a reliable and practical chemical to use to kill water-borne bacteria. Dr. Wolman also shows a film of microscopic organisms and silt in water and discusses the decline of typhoid fever. Dr. Wolman and his colleagues use both animated films and models of a water filtration plant and a sewage treatment plant to explain the water purification processes.