These lectures presented by experts from the Nordic countries are collected with the purpose of education in the field of environmental radioactivity. The book may be used in university courses on, eg., health physics and environmental science. Administrators and managers of environmental programmes may also find useful background information.The book covers all important aspects of environmental radioactivity such as source terms, atmospheric transport, processes in aquatic and terrestrial systems, radiochemistry and measurement techniques, radioactivity in man, modeling and assessment of...