The TRMRI is organizing a 25-year Anniversary Symposium on Chornobyl with participation of experts from Belarus, Ukraine, the United States and the World Health Organization. The focus of the conference will be analysis of lessons learned over 25 years of research on the consequences of the Chernobyl nuclear accident and application of these lessons to emergency preparedness for radiological disasters in urban environments. Specific attention will be given to psychological effects of radiological accidents and public preparedness. The meeting will be held in Chicago, IL during April 2011. More details will be coming soon.