Long-Range Transport of Airborne Pollutants and Acid Rain Conference This issue of Water, Air, and Soil Pollution is devoted to the collection of papers presented at the Long-Range Transport of Airborne Pollutants and Acid Rain Con ference held at Albany, N.Y., April 27-30, 1981. The issue includes most of the invited papers as well as a good number of the poster papers. The conference consisted of seven plenary sessions at which the invited papers were presented. After each session the participants discussed the session topic in the poster area where the subject was further explored and expanded. The seven technical sessions were: (1) Networks. (2) Models of Delivery. (3) Interactions with Soils and Ground Water. (4) Calibrated Water Sheds. (5) Effects on Aquatic Biota. (6) Effects on Terrestrial Biota. (7) Health implications. The closing session was devoted to the topic 'The Application of Scientific and Technical Data to the Development of Government Policy; Acid Rain - A Case Study'. The four papers given are not included here.