This year the environmental roundtable will be run as an "Idea Marketplace." At the start of the session anyone present will have the opportunity to stand up and in one minute present an idea related to system dynamics and the environment that they would like to discuss with colleagues. After the first 10 minutes or so a number of these ideas will have been collected, and the session will break up into sub-groups to discuss these topics. Each sub-group will quickly outline its interests and goals with an aim toward developing common approaches, and actions, for working the selected issue. Each sub-group will then report back to the whole group with a one page summary of their discussions. Participants are urged to arrive with some key ideas ready for discussion! Time will be limited.