A Social Dilemma with a Variable Resource (IMAGE) Institute of Science and Technology Austria Caption A social dilemma with a variable resource: If the lumberjacks work together to plant as well as fell trees, the natural resource remains valuable. If they are selfish, and log without replanting, the forest is ruined, earning them less or no money. Only a great deal of cooperative effort can get the forest back to its original, valuable state. Credit IST Austria/Birgit Rieger Usage Restrictions Image may only be used with credit. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.