INTRODUCTION RiskTrace is a family of software models designed to support environmental decision making. Initial software version development was sponsored by the United Nation Global Environment Facility (GEF) and NATO (Linkov et al., 2001) with a follow up funding by the American Chemistry Council. These agencies sponsored development of Risk Trace capabilities in spatially explicit ecological risk assessment. Current model development is sponsored by the US Army Center for Health Promotion and Preventive Medicine (CHPPM) and US Army Corps of Engineers. The project team is working on model performing Habitat Suitability Analysis (HSI) and environmental decision making. RiskTrace software is being merged with Questions and Decision (QnD) software developed by the US Army Corps of Engineers. This web site hosts RiskTrace publications and demo versions as well as its sister software QnD. In addition, we will be using this site to host information on upcoming conferences and events where RiskTrace and related programs are featured. RECENT CONFERENCES ENVIRONMENTAL SECURITY IN HARBORS AND COASTAL AREAS: MANAGEMENT USING COMPARATIVE RISK ASSESSMENT AND MULTI-CRITERIA DECISION ANALYSIS FRAMEWORK 20-24 April 2005 (Tentative) , Thessalonica, Greece PROBABILISTIC RISK ASSESSMENT: CURRENT DEVELOPMENTS AND APPLICATIONS FOR ENVIRONMENTAL ASSESSMENT AND MANAGEMENT March 28-30, 2005 Michigan State University, East Lansing, Michigan COMPARATIVE RISK ASSESSMENT AND MULTI-CRITERIA DECISION ANALYSIS: A FRAMEWORK FOR MANAGING CONTAMINATED SEDIMENTS 22-24 June 2004, Palm Beach, FL THE ROLE OF RISK ASSESSMENT IN ENVIRONMENTAL SECURITY AND EMERGENCY PREPAREDNESS IN THE MEDITERRANEAN REGIONApril 15-18, 2004, Israel INTEGRATED RISK COMMUNICATION AND DECISION ANALYSIS: PROCESS, METHODS AND TOOLS. A workshop to be held in conjunction with the Society for Risk Analysis Annual Meeting 4 December 2005, Wyndham Hotel Orlando, Florida RECENT PUBLICATIONS 1. Linkov, I., Grebenkov, A., Andrizhievski, A., Loukashevich, A., and Trifonov, A. (2004). “Risk-Trace: Software For Spatially Explicit Exposure Assessment,” in: Landscape Ecology and Wildlife Habitat Evaluation: Critical Information for Ecological Risk Assessment, Land-Use Management Activities, and Biodiversity Enhancement Practices, ASTM STP 1458, L. A. Kapustka, H. Gilbraith, M. Luxon, and G. R. Biddinger, Eds. ASTM International, West Conshohocken, PA, 2004. paper in pdf format 2. Linkov, I., Sahay, S., Seager, T.P., Kiker, G., Bridges, T. (2004). “Multi-Criteria Decision Analysis: Framework for Applications in Remedial Planning For Contaminated Sediments”. Proth, J.M., Levner, E., Linkov, I., eds. “Strategic Management of Marine Ecosystems,” Kluwer, Amsterdam 2004 (in press). paper in pdf format 3. Linkov, I., Varghese, A., Jamil, S., Seager, T.P., Kiker, G., Bridges, T. (2004). “Multi-Criteria Decision Analysis: Framework for Applications in Remedial Planning For Contaminated Sites”. in Linkov, I. And Ramadan, A. eds “Comparative Risk Assessment and Environmental Decision Making” Kluwer, 2004. paper in pdf format 4. Linkov, I., Grebenkov, A., Andrizhievski, A., Loukashevich, A., and Trifonov, A. Kapustka, L. (2004). “Incorporating Habitat Characterization into Risk-Trace: Software for Spatially Explicit Exposure Assessment.” in Linkov, I. And Ramadan, A. eds “Comparative Risk Assessment and Environmental Decision Making” Kluwer, 2004 paper in pdf format 5. Linkov, I., Grebenkov, A., Baitchorov, V. (2001). Spatially Explicit Exposure Models: Application To Military Sites. Journal of Toxicology and Industrial Health 17 230-235. paper in pdf format QnD SCREENING MODEL SYSTEM The Questions and Decisions ™ (QnD) screening model system was created to provide an effective and efficient tool to incorporate ecosystem, management, economics and socio-political issues into a user-friendly model framework.