Waste heat from thermal power generation and waste minerals from domestic sewage are polluting rivers and coastal waters. It would thus be an important step forward if these pollutants could be made productive in aquaculture. The proposal to call a meeting of experts on Waste Heat and Nutrient-Loaded Efflu ents in Aquaculture came from Dr. Ole Devik. His proposal was accepted and sponsored by the Special Program Panel on Eco-Sciences, a subsidiary body of the NATO Science Committee. NATO has extensive programs in the scientific and environmental fields, and I would like to take this...